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Semiconductors

3,393 materials

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In1Sb0.6As0.4

semiconductor

In₁Sb₀.₆As₀.₄ is a ternary III-V semiconductor alloy combining indium, antimony, and arsenic in a direct bandgap structure. This material is engineered primarily for infrared optoelectronic devices where its bandgap energy falls in the mid-to-long wavelength infrared region, making it valuable for thermal imaging, gas sensing, and infrared detectors that operate at cryogenic or thermoelectric cooling temperatures. Compared to binary compounds like InSb or InAs, this ternary composition offers tunable bandgap wavelength and improved lattice matching for heterostructure designs, positioning it as a key material for research in advanced infrared focal plane arrays and quantum infrared sensors.

infrared detectorsthermal imaging sensorsgas sensing
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In1Sb0.7As0.3

semiconductor

In₁Sb₀.₇As₀.₃ is a ternary III-V semiconductor alloy combining indium, antimony, and arsenic, belonging to the narrow-bandgap semiconductor family. This material is primarily of research and specialized device interest, exploited for infrared detection and thermal imaging applications where its bandgap energy falls in the mid-to-long wavelength infrared region. It offers potential advantages over binary InSb or InAs in tuning bandgap and lattice properties for specific detector wavelengths, though adoption remains limited compared to mature quaternary alloys like InGaAs.

infrared detectorsthermal imaging sensorsresearch semiconductors
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In1Sb0.8As0.2

semiconductor

In₁Sb₀.₈As₀.₂ is a ternary III-V semiconductor alloy combining indium, antimony, and arsenic in a zinc-blende crystal structure. This material belongs to the InSbAs family and is primarily investigated for infrared optoelectronic and high-speed electronic devices where the bandgap and lattice parameters can be tuned between those of InSb and InAs end-members. Engineering interest centers on mid-to-long-wavelength infrared detection, narrow-bandgap transistors, and quantum-effect devices, where this composition offers potential advantages in thermal sensitivity and carrier mobility compared to more conventional alternatives like InGaAs or HgCdTe.

infrared photodetectorsthermal imaging sensorshigh-electron-mobility transistors
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In1Sb0.99As0.01

semiconductor

In₁Sb₀.₉₉As₀.₀₁ is a narrow-bandgap III-V semiconductor alloy based on indium antimonide (InSb) with a small arsenic substitution on the antimony sublattice. This material belongs to the indium compound semiconductor family and represents a deliberate bandgap engineering approach to tune the electronic properties of InSb for specific infrared and optoelectronic applications. The arsenic doping modifies carrier concentration and energy band structure compared to pure InSb, making it relevant for mid-infrared detection, high-mobility transistor channels, and magnetoresistive sensor devices where precise bandgap control is critical.

infrared detectorsmid-IR photodiodeshigh-mobility transistors
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In1Sb0.9As0.1

semiconductor

InSbAs is a ternary III-V semiconductor alloy combining indium antimonide (InSb) with a small arsenic substitution (10% As, 90% Sb). This material belongs to the narrow-bandgap semiconductor family and is primarily of research and specialized device interest rather than high-volume production. InSbAs alloys are investigated for infrared detection, particularly in the mid-wave infrared (MWIR) region, where the arsenic doping modifies the bandgap and lattice parameter of InSb to improve performance in specific detector designs and thermal imaging applications.

infrared detectorsthermal imaging sensorsmid-wave IR applications
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In2Bi3Se7I

semiconductor

In2Bi3Se7I is a quaternary chalcohalide semiconductor compound combining indium, bismuth, selenium, and iodine in a layered crystal structure. This is a research-stage material studied for its potential as a narrow-bandgap semiconductor with interesting optoelectronic and thermoelectric properties, part of the broader family of bismuth chalcohalides being investigated as alternatives to lead-based compounds in photovoltaics and IR detection. The material represents exploratory work in non-toxic, earth-abundant semiconductors that could enable new applications in mid-infrared sensing and solid-state energy conversion if synthetic and processing challenges can be overcome.

infrared detectors and sensorsphotovoltaic absorber layersthermoelectric devices
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In2Cu1S3.5

semiconductor

In2Cu1S3.5 is a quaternary semiconductor compound combining indium, copper, and sulfur in a specific stoichiometric ratio, belonging to the family of copper-indium sulfide (CIS) and related chalcogenide semiconductors. This material is primarily of research interest for photovoltaic and optoelectronic applications, particularly as a potential absorber layer or component in thin-film solar cells and photodetectors where its bandgap and optical properties could offer advantages in light absorption and carrier transport. Relative to conventional CIS or CIGS (copper-indium-gallium-selenide) absorbers, quaternary formulations like this are explored to fine-tune electronic structure and improve efficiency or reduce material costs, though industrial deployment remains limited and material is not yet widely commercialized.

thin-film solar cellsphotodetectorsoptoelectronic research
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In2FeSe4

semiconductor

In2FeSe4 is a ternary semiconductor compound belonging to the chalcogenide family, combining indium, iron, and selenium in a layered or spinel-like crystal structure. This material remains primarily in the research phase, investigated for potential applications in thermoelectric devices, photovoltaic absorbers, and solid-state electronics where mixed-valence transition metals can enable tunable electronic properties. Unlike binary semiconductors, the three-element composition offers opportunities to engineer band gaps and carrier mobility through compositional control, though industrial adoption is limited and material synthesis and characterization are still active research areas.

thermoelectric energy conversionphotovoltaic researchsemiconductor device development
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In2GeTe3

semiconductor

In2GeTe3 is a ternary chalcogenide semiconductor compound composed of indium, germanium, and tellurium. This material belongs to the family of narrow-bandgap semiconductors and is primarily investigated in research contexts for thermoelectric and infrared optoelectronic applications, where its layered crystal structure and tunable electronic properties offer potential advantages over binary semiconductors in specific temperature and spectral regimes.

thermoelectric cooling and power generationinfrared detectors and sensorsnarrow-bandgap semiconductor research
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In2Hg6(P2Cl3)3

semiconductor

In2Hg6(P2Cl3)3 is a mixed-metal halide semiconductor compound combining indium, mercury, and phosphorus-chlorine units in a complex crystal structure. This is a research-phase material within the broad family of metal halide semiconductors; limited industrial deployment exists, but the compound is of interest in advanced semiconductor research for its potential electronic and optical properties arising from its unique anionic framework. Engineers and researchers would evaluate this material primarily in exploratory contexts where conventional semiconductors are insufficient, though significant development work would be required to translate laboratory findings into practical applications.

experimental semiconductorsresearch photonicshalide crystal engineering
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In2HgS4

semiconductor

In2HgS4 is a quaternary semiconductor compound combining indium, mercury, and sulfur, belonging to the class of ternary and quaternary chalcogenide semiconductors. This material is primarily of research interest for optoelectronic and photovoltaic applications, where its bandgap and optical properties may enable detection or energy conversion in specialized wavelength ranges. The mercury-containing composition presents both processing challenges and potential advantages in infrared or thermal imaging systems, though it remains less established in commercial production compared to binary (such as CdS) or ternary (such as CdZnS) alternatives.

infrared detectorsphotovoltaic researchoptoelectronic devices
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In2HgSe4

semiconductor

In₂HgSe₄ is a quaternary semiconductor compound belonging to the chalcogenide family, combining indium, mercury, and selenium in a specific stoichiometric ratio. This is a research-phase material studied for its electronic and optoelectronic properties, with potential applications in infrared detection and photovoltaic systems where wide bandgap semiconductors offer advantages over traditional binary or ternary compounds. The material's notable feature is its ability to operate in the infrared spectrum, making it potentially valuable for specialized detection and sensing applications where conventional semiconductors are limited.

infrared detectorssemiconductor researchoptoelectronic devices
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In2O3

semiconductor

Indium oxide (In₂O₃) is a transparent conducting oxide semiconductor with a wide bandgap, combining electrical conductivity with optical transparency in the visible spectrum. It is widely used in optoelectronic and photovoltaic applications, particularly as a transparent electrode material in liquid crystal displays (LCDs), organic light-emitting diodes (OLEDs), and thin-film solar cells, often alloyed with tin (ITO) to enhance conductivity. Engineers select In₂O₃-based materials when applications require simultaneous light transmission and electrical function, though the material's indium content and cost drive consideration of alternative transparent conducting oxides in cost-sensitive applications.

transparent electrodesLCD and OLED displaysphotovoltaic devices
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In2S3

semiconductor

Indium sulfide (In₂S₃) is a III-VI semiconductor compound with a direct bandgap, suitable for optoelectronic and photovoltaic applications. It appears primarily in research and emerging technology contexts rather than mature industrial production, where it is investigated for thin-film solar cells, photodetectors, and window layers in heterojunction devices due to its tunable bandgap and favorable optical properties compared to conventional alternatives like CdS.

thin-film photovoltaicswindow layers for solar cellsphotodetectors and UV sensing
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In2Se

semiconductor

In₂Se is a layered III-VI semiconductor compound composed of indium and selenium, belonging to the family of van der Waals materials with a naturally layered crystal structure. Currently primarily investigated in research and development contexts, In₂Se shows promise for next-generation optoelectronic and electronic devices due to its tunable bandgap, ferroelectric properties, and strong light-matter interactions. Engineers consider In₂Se for applications requiring thin-film devices, nonlinear optical response, or integration into heterogeneous semiconductor stacks where its layered nature enables mechanical exfoliation or epitaxial growth.

2D semiconductor researchoptoelectronic devicesferroelectric memory
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In2Se2O7

semiconductor

In₂Se₂O₇ is an indium selenite compound—a mixed-valence oxide-selenide semiconductor belonging to the family of metal chalcogenide oxides. This material is primarily investigated in research settings for its potential in optoelectronic and photocatalytic applications, where its layered crystal structure and tunable bandgap offer advantages over conventional binary semiconductors.

photocatalysis researchoptoelectronic devicesvisible-light absorption
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In2Se3

semiconductor

Indium selenide (In₂Se₃) is a III-VI semiconductor compound with a layered crystal structure, belonging to the family of transition metal chalcogenides. It is primarily of research and emerging technology interest rather than established industrial production, with potential applications in next-generation optoelectronic and energy conversion devices that exploit its direct bandgap and tunable electronic properties.

two-dimensional materials researchphotodetectors and image sensorssolar cells and photovoltaics
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In2Te

semiconductor

In₂Te is an indium telluride semiconductor compound belonging to the III-VI family of narrow bandgap materials. It is primarily of research and developmental interest rather than a mature commercial material, studied for infrared detection, thermal imaging, and photovoltaic applications where its narrow bandgap and telluride chemistry offer potential advantages in long-wavelength sensing. Compared to more established semiconductors like InSb or HgCdTe, In₂Te remains an exploratory compound whose practical deployment is limited, though the indium-tellurium material system is relevant to specialists in narrow-gap optoelectronics and space/defense sensing systems.

infrared detectorsthermal imaging sensorsnarrow-gap semiconductors
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In3AgTe5

semiconductor

In₃AgTe₅ is a ternary semiconductor compound composed of indium, silver, and tellurium, belonging to the family of III–V and mixed-valence chalcogenides. This material is primarily of research interest rather than established in high-volume production, investigated for its potential in thermoelectric applications and narrow-bandgap optoelectronic devices where the combination of heavy elements and mixed-valence bonding can enable efficient charge transport and phonon scattering control.

thermoelectric cooling/power generationinfrared detectorsresearch semiconductors
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In3CuS5

semiconductor

In₃CuS₅ is a ternary chalcogenide semiconductor compound composed of indium, copper, and sulfur, belonging to the I–III–VI₂ family of semiconductors. This material is primarily investigated in research contexts for photovoltaic and optoelectronic applications, where its tunable bandgap and relatively abundant constituent elements offer potential advantages over conventional cadmium-based alternatives. Its notable appeal lies in its non-toxic composition and potential for thin-film solar cells, though it remains an early-stage material with limited commercial deployment compared to established semiconductors.

thin-film photovoltaicssolar cellsoptoelectronic devices
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In3CuSe5

semiconductor

In₃CuSe₅ is a ternary semiconductor compound composed of indium, copper, and selenium, belonging to the chalcopyrite-related family of materials used in photovoltaic and optoelectronic devices. This material is primarily of research and development interest for thin-film solar cells and infrared detectors, where its direct bandgap and photosensitivity offer potential advantages over traditional silicon-based semiconductors in specialized wavelength applications. Engineers consider In₃CuSe₅ as an alternative absorber layer material in next-generation photovoltaic architectures, though it remains less commercially established than related compounds like CIGS (copper indium gallium diselenide), making it most relevant for emerging technologies and laboratory-scale device development.

thin-film solar cellsinfrared detectorsoptoelectronic devices
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In4Bi3S10

semiconductor

In₄Bi₃S₁₀ is a quaternary semiconductor compound belonging to the indium-bismuth-sulfide family, combining elements from Groups III, V, and VI of the periodic table. This material is primarily of research and developmental interest for thermoelectric and optoelectronic applications, where layered sulfide semiconductors offer potential advantages in tuning bandgap and lattice thermal conductivity. The In-Bi-S system is being explored as an alternative to conventional thermoelectrics and narrow-bandgap semiconductors, though industrial adoption remains limited compared to more established compounds like Bi₂Te₃ or CIGS photovoltaics.

thermoelectric devicessemiconductor researchoptoelectronic sensors
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In4Cu2Te7

semiconductor

In4Cu2Te7 is a quaternary semiconductor compound belonging to the indium–copper–tellurium family, synthesized primarily for research into narrow-bandgap and thermoelectric materials. This material remains largely in the experimental phase, with potential applications in infrared detection, thermoelectric power generation, and specialized optoelectronic devices where its unique electronic structure could offer advantages over binary or ternary semiconductors; its development is driven by the search for efficient materials in thermal-to-electric energy conversion and mid-to-far infrared sensing.

thermoelectric power generationinfrared detectorsthermal energy harvesting
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In4S5

semiconductor

In₄S₅ is a quaternary indium sulfide compound belonging to the III–V semiconductor family, with potential applications in optoelectronic and photovoltaic devices. This material is primarily of research interest for next-generation solar cells, photodetectors, and infrared-sensitive components, where its direct bandgap and sulfide composition offer alternatives to more established III–V semiconductors like GaAs or InP. Industrial adoption remains limited; engineers would consider In₄S₅ when exploring cost-effective or earth-abundant substitutes for conventional indium phosphides, or when narrow bandgap and high absorption coefficients are critical for specialized photonic applications.

photovoltaic devicesphotodetectorsinfrared sensors
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In4Se3

semiconductor

In₄Se₃ is an indium selenide compound semiconductor belonging to the III-VI family of materials, typically studied in its bulk crystalline or thin-film forms. This is primarily a research-phase material rather than a widely commercialized engineering material, investigated for potential applications in optoelectronics and thermoelectric devices where its narrow bandgap and layered crystal structure may offer advantages over more conventional semiconductors.

experimental optoelectronicsinfrared detectorsthermoelectric modules
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In4Te3

semiconductor

In₄Te₃ is an indium telluride semiconductor compound belonging to the III-VI material family, characterized by a layered crystal structure with moderate bandgap properties. This material is primarily investigated in research contexts for thermoelectric applications, infrared optics, and narrow-bandgap device engineering, where its layered architecture and electronic properties offer potential advantages over conventional semiconductors in specific temperature and radiation environments.

thermoelectric cooling/power generationinfrared detectors and opticsnarrow-bandgap semiconductor research
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In5AgS8

semiconductor

In₅AgS₈ is a quaternary semiconductor compound combining indium, silver, and sulfur, belonging to the family of metal sulfide semiconductors with mixed-valence cation systems. This material is primarily of research and developmental interest for optoelectronic and photovoltaic applications, where its narrow bandgap and mixed-metal composition offer potential advantages in light absorption and charge transport compared to binary or ternary alternatives. The silver-indium-sulfide family has attracted attention for thin-film solar cells, infrared detectors, and other emerging semiconductor technologies where tunable electronic properties and cost-effective processing are priorities.

thin-film photovoltaicsinfrared detectorsoptoelectronic devices
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In5AgTe8

semiconductor

In₅AgTe₈ is a ternary semiconductor compound combining indium, silver, and tellurium, belonging to the chalcogenide semiconductor family. This material is primarily of research interest for thermoelectric applications and potentially for optoelectronic or photovoltaic devices, where the combination of heavy elements and mixed-valence chemistry can enable efficient heat-to-electricity conversion or tunable band gap behavior. Engineers evaluating this compound should note it represents an exploratory composition rather than a mature commercial material, making it relevant for next-generation energy harvesting systems where conventional semiconductors face performance or cost constraints.

thermoelectric deviceswaste heat recoverysemiconductor research
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In5CuS8

semiconductor

In₅CuS₈ is a quaternary sulfide semiconductor compound belonging to the metal chalcogenide family, combining indium, copper, and sulfur in a structured crystalline lattice. This material is primarily of research interest for photovoltaic and optoelectronic applications, where its band gap and electronic properties position it as a potential absorber layer or window material in thin-film solar cells and photodetectors. Compared to more established semiconductors like CdTe or CIGS, In₅CuS₈ offers the advantage of using abundant, non-toxic elements while potentially delivering competitive optical and transport properties, though it remains largely in the development phase with limited commercial deployment.

thin-film photovoltaicssolar absorber layersphotodetectors
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In5Se6

semiconductor

In₅Se₆ is a layered indium selenide compound belonging to the III-VI semiconductor family, characterized by a quasi-two-dimensional crystal structure similar to other indium chalcogenides. This material is primarily of research interest for optoelectronic and photovoltaic applications, where its direct bandgap and tunable electronic properties make it attractive for next-generation solar cells, photodetectors, and light-emitting devices; it represents an underexplored alternative to more common indium-based semiconductors (InSe, In₂Se₃) and offers potential advantages in layer-dependent properties and integration into van der Waals heterostructures.

photovoltaic devicesphotodetectorsthin-film optoelectronics
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In6S7

semiconductor

In₆S₇ is an indium sulfide compound belonging to the family of III–VI semiconductors, characterized by a layered crystal structure and narrow bandgap. This material is primarily investigated in research contexts for optoelectronic and photovoltaic applications, where its tunable electronic properties and potential for thin-film device fabrication position it as a candidate alternative to conventional semiconductors like CdTe or CIGS absorbers.

thin-film photovoltaicsoptoelectronic devicesinfrared detectors
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In6Se7

semiconductor

In6Se7 is a narrow-bandgap semiconductor compound belonging to the indium selenide family, typically investigated as a layered or quasi-2D material for electronic and optoelectronic applications. While primarily a research material rather than a commodity industrial compound, In6Se7 and related indium selenide phases are explored for infrared detectors, thermoelectric devices, and next-generation photovoltaic systems where its specific band structure and layered crystal properties offer advantages over simpler binary semiconductors. Interest in this composition reflects broader materials research into van der Waals solids and low-dimensional semiconductors for flexible electronics and quantum devices.

infrared photodetectorsthermoelectric devicesadvanced photovoltaics
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In9AgTe14

semiconductor

In9AgTe14 is an intermetallic semiconductor compound combining indium, silver, and tellurium. This material belongs to the family of ternary chalcogenides and represents an emerging research composition with potential applications in thermoelectric energy conversion and solid-state electronic devices. The silver-tellurium bonding combined with indium's semiconducting character makes this compound of interest for low-temperature thermal management and possible photovoltaic or detector applications, though it remains primarily a laboratory-phase material requiring further development before widespread industrial deployment.

thermoelectric cooling and power generationsemiconductor research and developmentlow-temperature thermal management
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InAgTe2

semiconductor

InAgTe2 is a ternary semiconductor compound combining indium, silver, and tellurium in a chalcogenide crystal structure. This material belongs to the family of III-V and I-III-VI semiconductors, which are of significant interest for optoelectronic and thermoelectric applications. InAgTe2 remains primarily a research-phase compound, but materials in this compositional class are explored for infrared detection, photovoltaic energy conversion, and solid-state cooling due to their tunable bandgap and carrier transport properties.

infrared detectors and sensorsexperimental thermoelectric devicesoptoelectronic research
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InAs

semiconductor

Indium arsenide (InAs) is a III–V compound semiconductor with a direct bandgap, widely recognized for its narrow energy gap and high carrier mobility at room temperature. It is a cornerstone material in infrared optoelectronics, high-speed transistors, and quantum device research, chosen over silicon and gallium arsenide when sensitivity to infrared wavelengths or extreme operating speeds are critical requirements.

infrared photodetectorsmid-infrared lasershigh-electron-mobility transistors (HEMTs)
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InAsI

semiconductor

InAsI is a compound semiconductor combining indium arsenide with iodine, belonging to the III-V semiconductor family. This material remains largely in the research phase, where it is being investigated for potential optoelectronic and high-speed electronic applications that leverage the favorable bandgap and carrier mobility properties of indium arsenide combined with iodine doping or alloying effects. Engineers would consider this material primarily in specialized photonics and quantum device research where conventional InAs may be enhanced by iodine incorporation to tune electronic or optical properties.

infrared photodetectorsquantum dotshigh-frequency transistors
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InBi2S4Br

semiconductor

InBi₂S₄Br is a mixed-halide indium bismuth sulfide compound belonging to the family of quaternary semiconductors, combining group III (indium), group V (bismuth), and chalcogenide (sulfur) elements with halide doping. This is an emerging research material rather than an established industrial compound; such mixed-anion semiconductors are being investigated for optoelectronic and photovoltaic applications where bandgap engineering and enhanced light absorption are desired. The inclusion of both sulfide and bromide anions offers potential routes to tune electronic properties and carrier dynamics compared to binary or ternary alternatives, though practical device integration and scalability remain largely unexplored.

photovoltaic absorber layeroptoelectronic device researchbandgap engineering
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InBi2S4Cl

semiconductor

InBi2S4Cl is a quaternary semiconductor compound combining indium, bismuth, sulfur, and chlorine elements. This material belongs to the family of mixed-metal chalcohalides and represents an experimental composition primarily of interest in solid-state physics research rather than established industrial production. The compound's potential applications lie in optoelectronic and photovoltaic device research, where the layered sulfide structure and halide doping offer opportunities for band gap engineering and charge transport optimization in next-generation semiconductor devices.

experimental optoelectronic devicesphotovoltaic researchsolid-state semiconductor development
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InBi2Se4Br

semiconductor

InBi₂Se₄Br is an experimental mixed-halide bismuth selenide compound belonging to the family of layered chalcogenide semiconductors. This material is primarily of research interest for its potential as a topological insulator or narrow-bandgap semiconductor, with possible applications in quantum electronics and thermoelectric devices where the combination of bismuth, selenium, and bromine may offer tunable electronic properties unavailable in simpler binary compounds.

topological electronics (research)thermoelectric generationquantum device substrates
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InCuGeSe4

semiconductor

InCuGeSe₄ is a quaternary semiconductor compound belonging to the I-III-IV-VI₄ chalcogenide family, combining indium, copper, germanium, and selenium in a layered crystal structure. This material is primarily of research and development interest for photovoltaic and thermoelectric applications, where its tunable bandgap and potential for efficient charge transport make it a candidate for next-generation thin-film solar cells and solid-state energy conversion devices. InCuGeSe₄ represents an emerging alternative to traditional binary and ternary semiconductors, offering the potential for improved performance through compositional engineering, though it remains largely in the experimental phase with limited commercial adoption compared to established chalcogenide materials like CIGS.

thin-film photovoltaicsthermoelectric devicessolar energy conversion
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InCuS2

semiconductor

InCuS₂ is a ternary semiconductor compound combining indium, copper, and sulfur, belonging to the family of chalcopyrite-type semiconductors. This material is primarily of research interest for photovoltaic and optoelectronic applications, where its direct bandgap and light-absorbing properties make it a candidate for thin-film solar cells and photodetectors as an alternative to more established compounds like CIGS (copper indium gallium selenide). While not yet widely commercialized, InCuS₂ represents an experimental approach to reducing reliance on scarce elements in semiconductor technology, though material stability and device efficiency optimization remain active areas of investigation.

thin-film photovoltaicsphotodetectorsoptoelectronic devices
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InHg7S6Cl5

semiconductor

InHg7S6Cl5 is a mixed-metal chalcohalide semiconductor compound containing indium, mercury, sulfur, and chlorine elements. This is a research-phase material within the family of complex metal sulfides and halides, studied primarily for potential optoelectronic and photovoltaic applications due to its semiconducting bandgap. As an experimental compound, it remains outside mainstream industrial production but represents ongoing exploration in solid-state chemistry for next-generation photonic devices and alternative semiconductor platforms.

experimental photovoltaicsoptoelectronic researchsemiconductor bandgap engineering
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InN

semiconductor

Indium nitride (InN) is a wide-bandgap III-V semiconductor compound with a hexagonal wurtzite crystal structure, belonging to the nitride family alongside GaN and AlN. It is primarily used in high-frequency and optoelectronic devices, particularly in RF power amplifiers, high-electron-mobility transistors (HEMTs), and emerging photovoltaic applications where its narrow bandgap (smaller than GaN) enables operation in the infrared spectrum. InN remains largely in research and early-stage commercialization phases compared to mature GaN technology, but its potential for tunable bandgap engineering in heterostructures and high-frequency applications at microwave and millimeter-wave frequencies makes it attractive for next-generation wireless and sensing systems.

RF power amplifiersHigh-electron-mobility transistors (HEMTs)Infrared optoelectronics
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InP

semiconductor

Indium phosphide (InP) is a III-V direct-bandgap semiconductor compound used in high-speed optoelectronic and microwave applications where superior electron mobility and direct bandgap properties are required. It is the material of choice for high-frequency integrated circuits, infrared LEDs, photodetectors, and long-wavelength fiber-optic communications (particularly 1.3–1.55 μm window), where its performance advantages over silicon and GaAs become critical for speed and efficiency. Engineers select InP when conventional semiconductors cannot meet bandwidth, frequency, or spectral requirements, though its higher cost and greater brittleness than silicon limit adoption to performance-critical niches.

fiber-optic communicationshigh-frequency RF/microwave circuitsinfrared photodetectors
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InP2S4

semiconductor

InP₂S₄ is an indium phosphide sulfide compound semiconductor combining elements from both phosphide and sulfide material families, representing an emerging class of mixed-anion semiconductors still primarily in research and development stages. This material is being investigated for optoelectronic and photonic applications where tunable bandgap and mixed-anion engineering could enable devices spanning infrared to visible wavelengths, though it remains largely in exploratory research rather than established commercial production. Engineers considering this material should view it as a platform for next-generation semiconductor research rather than a mature engineering choice, with potential advantages in bandgap engineering and heterostructure design compared to conventional III-V or II-VI semiconductors.

research optoelectronicsphotonic integrated circuitsinfrared detectors
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InP2Se4

semiconductor

InP₂Se₄ is an indium-based ternary chalcogenide semiconductor compound combining indium phosphide and indium selenide chemistry. This material remains primarily in the research and development phase, studied for its potential in optoelectronic and photovoltaic applications where tunable bandgap and mixed-anion semiconductors offer advantages over binary alternatives like InP or InSe alone. The material family is of interest for next-generation solar cells, photodetectors, and thin-film electronics where the P-Se composition ratio can be engineered to optimize light absorption and charge transport.

experimental optoelectronicsthin-film photovoltaicsphotodetector devices
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InPS4

semiconductor

InPS₄ is an indium phosphorus sulfide compound belonging to the family of III-V and mixed anion semiconductors. This material is primarily of research interest for optoelectronic and photovoltaic applications, where its direct bandgap and layered crystal structure offer potential advantages in light emission, detection, and energy conversion devices. InPS₄ represents an emerging alternative to more conventional semiconductors, with potential relevance in next-generation solar cells, photodetectors, and integrated photonics where tunable electronic properties and lattice engineering are valuable.

Photovoltaic devicesPhotodetectorsOptoelectronics research
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In(PSe2)2

semiconductor

In(PSe₂)₂ is a layered semiconductor compound composed of indium and diselenophosphate units, belonging to the family of metal phosphorus chalcogenides. This material is primarily of research interest rather than established industrial use, with potential applications in optoelectronics and energy storage owing to its layered structure and semiconducting properties.

research semiconductors2D materials explorationoptoelectronic devices
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InS

semiconductor

Indium sulfide (InS) is a III-VI direct bandgap semiconductor compound used primarily in optoelectronic and photovoltaic device research. It appears as a layered material with moderate mechanical stiffness and notably low exfoliation energy, making it amenable to exfoliation into thin-film or two-dimensional forms for advanced device applications. InS is of particular interest in emerging areas such as thin-film solar cells, photodetectors, and next-generation electronics where its bandgap properties and layer-dependent characteristics offer advantages over conventional semiconductors.

thin-film photovoltaicsphotodetectors and optoelectronics2D material research
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InSb

semiconductor

Indium antimonide (InSb) is a III-V semiconductor compound characterized by a narrow bandgap and high electron mobility, making it particularly valuable for infrared detection and high-frequency electronic applications. It is widely used in infrared photodetectors, thermal imaging sensors, and millimeter-wave devices where its superior carrier mobility and sensitivity to infrared radiation provide significant advantages over silicon or germanium alternatives. Engineers select InSb when low-temperature operation, fast response times, or detection in the mid- to far-infrared spectrum are critical requirements, though its more limited temperature stability and higher cost compared to conventional semiconductors restrict its use to specialized applications.

infrared photodetectorsthermal imaging sensorsmillimeter-wave electronics
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InSb0.01As0.99

semiconductor

InSb₀.₀₁As₀.₉₉ is a narrow-bandgap III-V semiconductor alloy composed primarily of InAs with a small antimony dopant, designed to fine-tune electronic and optical properties for infrared applications. This material is used in infrared detectors, thermal imaging systems, and high-sensitivity photodiodes where the bandgap engineering provided by antimony substitution enables detection in specific infrared wavelength ranges. The InAs-rich composition makes it particularly relevant for mid-wave and long-wave infrared sensing where competing materials like pure InAs or InSb may not provide optimal thermal or spectral performance.

infrared detectorsthermal imaging sensorsphotodiodes
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InSb0.1As0.9

semiconductor

InSb₀.₁As₀.₉ is a III-V semiconductor alloy composed primarily of indium arsenide (InAs) with a small substitution of antimony (Sb), forming a narrow-bandgap direct semiconductor. This material sits in the InAs-InSb alloy family and is primarily of research and specialized optoelectronic interest, chosen when the bandgap or lattice parameter needs fine-tuning relative to pure InAs for specific device requirements. The Sb addition to InAs increases the bandgap and can improve lattice matching to certain substrates, making it relevant for infrared detectors, quantum well structures, and high-mobility transistor applications where precise energy band engineering is critical.

infrared photodetectorsquantum well deviceshigh-electron-mobility transistors (HEMTs)
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InSb0.2As0.8

semiconductor

InSb₀.₂As₀.₈ is a III-V compound semiconductor alloy combining indium antimonide and indium arsenide in a 20:80 ratio. This material belongs to the indium arsenide family and is engineered to tune the bandgap and lattice properties between pure InAs and InSb end members. InSb₀.₂As₀.₈ is primarily of research and specialized device interest for infrared photonics, narrow-bandgap optoelectronics, and high-mobility electron transport applications where the intermediate composition offers a balance between InAs's higher electron mobility and InSb's lower bandgap energy.

infrared detectors and sensorsquantum well heterostructureshigh-electron-mobility transistors (HEMT)
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InSb0.3As0.7

semiconductor

InSb₀.₃As₀.₇ is a III-V semiconductor alloy combining indium antimonide and indium arsenide in a 30:70 ratio, belonging to the indium-based compound semiconductor family. This material is engineered for infrared and optoelectronic applications where its narrow bandgap enables detection and emission in the mid-infrared spectrum (approximately 3–5 μm wavelength range). InSb₀.₃As₀.₇ is valued in thermal imaging systems, infrared sensors, and military/aerospace surveillance where materials must operate at longer wavelengths than standard GaAs or InP, while offering better thermal stability and lattice matching than pure InSb for certain device architectures.

infrared detectorsthermal imaging sensorsmilitary surveillance systems
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InSb0.4As0.6

semiconductor

InSb₀.₄As₀.₆ is a III-V semiconductor alloy combining indium antimonide and indium arsenide in a 40:60 molar ratio, belonging to the narrow-bandgap family of compound semiconductors. This material is primarily explored in infrared detection and imaging applications, where its tunable bandgap (between InSb and InAs endmembers) enables sensitivity in the mid-wave to long-wave infrared spectrum. InSb₀.₄As₀.₆ represents an engineering trade-off between the higher mobility of InSb and the larger bandgap of InAs, making it a research-phase material for thermal imaging sensors, military surveillance systems, and scientific instrumentation where lattice-matched growth on InSb or InAs substrates is advantageous.

infrared detectors and focal plane arraysthermal imaging sensorsmilitary surveillance optics
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InSb0.5As0.5

semiconductor

InSb₀.₅As₀.₅ is a III-V semiconductor alloy combining indium antimonide and indium arsenide in equal proportions, belonging to the narrow-bandgap semiconductor family. This lattice-matched or near-lattice-matched compound is primarily of research and development interest for infrared (IR) detection and high-speed optoelectronic devices, where its intermediate bandgap and carrier mobility characteristics offer a tunable alternative to binary InSb or InAs. The material is notable for potential integration in thermophotovoltaic systems, mid-infrared sensors, and heterojunction structures where composition engineering enables bandgap tailoring without introducing lattice strain.

infrared detectorsthermophotovoltaic deviceshigh-speed photodiodes
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InSb0.6As0.4

semiconductor

InSb₀.₆As₀.₄ is a III–V semiconductor alloy composed of indium antimonide and indium arsenide in a 60:40 ratio, belonging to the narrow-bandgap III–V family. This material is engineered for infrared optoelectronic applications, particularly in the mid-to-long wavelength infrared range where its bandgap is tuned between bulk InSb and InAs. InSb₀.₆As₀.₄ is used in thermal imaging detectors, infrared focal plane arrays, and high-sensitivity photodiodes where operation in the 3–12 μm atmospheric window is critical; it offers superior carrier mobility and lower dark current compared to HgCdTe alternatives, making it attractive for space-qualified and military thermal sensing systems.

infrared detectorsthermal imaging sensorsfocal plane arrays
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InSb0.7As0.3

semiconductor

InSb₀.₇As₀.₃ is a ternary III-V semiconductor alloy combining indium antimonide and indium arsenide in a 70:30 composition ratio. This material is engineered for infrared and optoelectronic applications where bandgap tuning between InSb and InAs enables detection and emission in the mid-to-long wavelength infrared spectrum. The composition is notable for balancing the narrow bandgap of InSb (favorable for thermal infrared detection) with the lattice properties and processing characteristics of InAs, making it relevant for researchers and manufacturers targeting wavelength-specific infrared sensors, thermal imaging systems, and quantum well structures where lattice matching and bandgap engineering are critical.

infrared detectorsthermal imaging sensorsquantum well structures
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InSb0.8As0.2

semiconductor

InSb₀.₈As₀.₂ is a III-V compound semiconductor alloy formed by substituting arsenic into indium antimonide, creating a tunable narrow-bandgap material. This composition sits in the indium antimonide family and is primarily of research interest for infrared optoelectronics and high-mobility device applications where fine control of bandgap energy is needed. The material enables detector and emitter designs operating in the mid-infrared spectral region, with potential advantages in thermoelectric devices and high-speed electronic applications where InSb's intrinsic properties require modification.

infrared photodetectorsmid-IR optoelectronicshigh-mobility semiconductors
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InSb0.99As0.01

semiconductor

InSb₀.₉₉As₀.₀₁ is a narrow-bandgap III-V semiconductor alloy formed by introducing a small amount of arsenic into indium antimonide (InSb), creating a ternary compound with engineered electronic properties. This material belongs to the indium-based III-V family and is primarily of research and specialized device interest, as the arsenic incorporation modifies the bandgap and carrier behavior compared to pure InSb. It is explored in infrared detection, high-mobility device applications, and quantum well structures where the slight compositional adjustment enables bandgap engineering to optimize performance in specific frequency ranges or device architectures.

infrared photodetectorsmid-infrared sensorsquantum well heterostructures
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