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K2B8O13

ceramic

K2B8O13 is a potassium borate ceramic compound belonging to the borate glass-ceramic family, characterized by a structure combining potassium oxide with boric oxide networks. This material is primarily investigated in research contexts for thermal management, optical applications, and specialized glass formulations where borate chemistry offers advantages in lowering processing temperatures and modifying refractive properties compared to silicate-based alternatives.

thermal management systemsoptical glass formulationsborate ceramic coatings
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K2BaNb2S11

semiconductor

K2BaNb2S11 is a ternary sulfide semiconductor compound containing potassium, barium, and niobium. This is a research-phase material currently explored for its potential in photocatalysis, optoelectronic devices, and nonlinear optical applications, leveraging the wide bandgap and crystal structure characteristics typical of complex metal sulfides. Engineers and researchers consider such compounds as alternatives to oxides when sulfide-based semiconductors offer superior light absorption or catalytic activity for specific wavelength ranges.

photocatalytic water splittingnonlinear optical devicessemiconductor research
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K2Bi8Se13

semiconductor

K2Bi8Se13 is a quaternary chalcogenide semiconductor compound combining potassium, bismuth, and selenium in a layered crystal structure. This material belongs to the family of bismuth-based selenides, which are of significant research interest for thermoelectric and optoelectronic applications due to their narrow bandgap and layered topology. While primarily a laboratory compound rather than a commercial product, K2Bi8Se13 represents the broader potential of complex chalcogenide systems for energy conversion and advanced electronics where low thermal conductivity coupled with electronic functionality is advantageous.

thermoelectric devicessolid-state coolinginfrared detectors
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K2Cd2Te3

semiconductor

K2Cd2Te3 is a ternary semiconductor compound composed of potassium, cadmium, and tellurium, belonging to the class of chalcogenide semiconductors. This material is primarily of research interest for optoelectronic and photovoltaic applications, particularly in thin-film solar cells and infrared detection systems where its bandgap and optical properties may offer advantages in specific wavelength ranges. As a cadmium-bearing compound, it presents both materials science interest for next-generation absorber layers and practical constraints around cadmium toxicity that limit commercialization compared to cadmium-free alternatives like perovskites or CIGS-based systems.

thin-film photovoltaics (research)infrared detectorsoptoelectronic devices
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K2Cd3S4

semiconductor

K2Cd3S4 is a ternary sulfide semiconductor compound combining potassium, cadmium, and sulfur in a fixed stoichiometric ratio. This material belongs to the family of metal sulfide semiconductors and is primarily studied in research contexts for its potential electronic and photonic properties, rather than established high-volume industrial applications. The cadmium-sulfide base gives it relevance to photodetector and optical sensing research, though practical deployment remains limited compared to more mature semiconductor alternatives like CdS or CdTe.

photodetector researchoptical sensing compoundsphotovoltaic development
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K2Cd3Se4

semiconductor

K2Cd3Se4 is a ternary semiconductor compound composed of potassium, cadmium, and selenium, belonging to the chalcogenide semiconductor family. This material is primarily studied in research contexts for optoelectronic and photovoltaic applications, where its tunable bandgap and crystalline structure make it of interest for next-generation solar cells, photodetectors, and other light-harvesting devices. Relative to more mature semiconductors like CdSe quantum dots or CdTe thin films, ternary systems like K2Cd3Se4 offer potential advantages in composition tuning and lattice engineering, though commercial deployment remains limited and material characterization is ongoing.

photovoltaic researchoptoelectronic devicesphotodetector development
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K2Cd3Te4

semiconductor

K2Cd3Te4 is a ternary semiconductor compound composed of potassium, cadmium, and tellurium, belonging to the class of chalcogenide semiconductors. This material is primarily of research and developmental interest rather than established in high-volume industrial production; it is investigated for optoelectronic and photovoltaic applications where its band gap and electronic properties may offer advantages in specific niche applications. The cadmium-tellurium backbone positions this compound in the family of II–VI semiconductors, which are historically important for infrared detection, solar cells, and radiation detection, though cadmium-based systems face regulatory and toxicity constraints that limit conventional deployment.

experimental photovoltaic materialsinfrared optoelectronics (research phase)radiation detection (potential)
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K2CdP2Se6

semiconductor

K2CdP2Se6 is a ternary chalcogenide semiconductor compound combining potassium, cadmium, phosphorus, and selenium in a layered crystal structure. This material is primarily of research and experimental interest for nonlinear optical applications, particularly in the infrared and mid-infrared spectral regions where it shows promise for frequency conversion and parametric amplification. The chalcogenide family's notable advantage over conventional oxides is its transparency window extended into longer wavelengths, making it relevant for applications requiring efficient light-matter interaction beyond the visible spectrum.

nonlinear optics (frequency conversion)infrared laser systemsparametric amplifiers
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K2Cd(PSe3)2

semiconductor

K2Cd(PSe3)2 is a ternary chalcogenide semiconductor compound containing potassium, cadmium, and phosphorus selenide units in a layered crystal structure. This is a research-phase material primarily of interest to the solid-state physics and materials chemistry communities for investigating novel electronic and photonic properties arising from its mixed-metal and mixed-chalcogen composition. The material belongs to a family of layered semiconductors that show promise for optoelectronic and energy conversion applications, though industrial deployment remains limited; engineers would consider it for exploratory work in photovoltaics, photodetectors, or nonlinear optical devices where band gap tuning and layer engineering are critical design goals.

experimental photovoltaic researchphotodetector developmentnonlinear optical materials
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K2CeP2O8

semiconductor

K2CeP2O8 is a rare-earth phosphate ceramic compound containing potassium, cerium, and phosphorus oxide. This is a research-phase material within the rare-earth phosphate family, investigated primarily for its potential in solid-state applications including photoluminescence, ion conductivity, and thermal management in advanced electronic or nuclear systems. The cerium-containing phosphate structure makes it a candidate for scintillator applications, radiation detection, or as a host matrix in luminescent ceramics, though industrial adoption remains limited compared to established alternatives like yttrium phosphates or cerium-doped silicates.

scintillator materialsradiation detectionphosphor research
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K2Ce(PO4)2

semiconductor

K2Ce(PO4)2 is a rare-earth phosphate ceramic compound combining potassium, cerium, and phosphate groups, classified as a semiconductor material. This is primarily a research-phase compound studied for its ionic conductivity and photoluminescent properties within the broader family of rare-earth phosphate materials. Potential applications focus on solid-state electrolytes for advanced batteries, photonic devices, and specialized optical coatings, where its rare-earth dopant characteristics may offer advantages in ion transport or luminescence efficiency compared to conventional phosphate ceramics.

solid-state battery electrolytesoptical phosphorsphotonic devices
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K2CO3

ceramic

Potassium carbonate (K₂CO₃) is an inorganic ceramic compound commonly produced as a white crystalline powder or granule. It functions primarily as a chemical precursor, flux material, and electrolyte rather than as a structural ceramic, with applications spanning glass manufacturing, metal processing, fertilizer production, and laboratory chemistry. Engineers select K₂CO₃ for its effectiveness as a glass flux (lowering melting temperatures), its use in potassium-based battery electrolytes, and its role in specialized welding and metal refining processes where alkaline environments are beneficial.

glass and ceramic manufacturingmetal welding and processingbattery electrolytes
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K2CrO4

ceramic

Potassium chromate (K2CrO4) is an inorganic ionic ceramic compound consisting of potassium cations and chromate anions, commonly encountered as a yellow crystalline solid. It is primarily used in analytical chemistry, metal surface treatment, and corrosion inhibition applications, where its strong oxidizing properties and chromate functionality provide protection against rust and enable detection reactions in laboratory settings. Engineers select K2CrO4 for corrosion-inhibiting coatings and conversion treatments on steel and other metals, though its use is increasingly restricted in some regions due to environmental and health regulations favoring less toxic alternatives.

corrosion inhibition coatingsmetal surface treatmentanalytical chemistry reagent
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K2CsSb

semiconductor

K2CsSb is a ternary alkali antimonide compound belonging to the family of photoelectric materials and wide-bandgap semiconductors. This material is primarily of research interest for photocathode applications, where its low work function and efficient electron emission properties make it valuable for devices requiring high quantum efficiency in the ultraviolet to visible spectrum. K2CsSb represents an important material class in modern detection and imaging systems, competing with other alkali antimonide photocathodes by offering improved spectral response and operational stability compared to simpler binary compounds.

photomultiplier tubesimage intensifiersultraviolet detectors
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K2Cu2Sn2S6

semiconductor

K2Cu2Sn2S6 is a quaternary sulfide semiconductor compound containing potassium, copper, tin, and sulfur. This material belongs to the family of multinary chalcogenides and is primarily investigated in research contexts for photovoltaic and optoelectronic applications, where its band gap and crystal structure make it a candidate for thin-film solar cells and light-emitting devices as an alternative to more toxic or scarce semiconductor materials.

thin-film photovoltaicssolar cell absorber layersoptoelectronic devices
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K2Cu2Sn2Se6

semiconductor

K2Cu2Sn2Se6 is a quaternary chalcogenide semiconductor compound combining potassium, copper, tin, and selenium in a layered crystal structure. This material belongs to the family of earth-abundant semiconductor compounds and is primarily studied in research contexts for photovoltaic and optoelectronic applications as a potential alternative to lead halide perovskites and other conventional absorbers. The combination of non-toxic, abundant elements makes it attractive for next-generation solar cells and light-emitting devices, though it remains largely in the experimental phase with ongoing investigation into crystalline quality, band gap engineering, and device integration.

photovoltaic absorber layerthin-film solar cellsoptoelectronic devices
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K2Cu2ThS4

semiconductor

K2Cu2ThS4 is a complex quaternary semiconductor compound containing potassium, copper, thorium, and sulfur. This material is primarily of research interest rather than established industrial production, belonging to the family of multinary metal sulfides with potential applications in emerging semiconductor and solid-state physics research. As a thorium-bearing compound, it represents an experimental system for studying mixed-metal sulfide chemistry and electronic properties, though practical applications remain under investigation due to the specialized handling requirements of thorium-containing materials.

experimental semiconductorssolid-state physics researchmultinary sulfide systems
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K2CuGa3Se6

semiconductor

K2CuGa3Se6 is a quaternary semiconductor compound composed of potassium, copper, gallium, and selenium, belonging to the family of I–III–VI semiconductors. This material is primarily of research interest for optoelectronic and photovoltaic applications, where its tunable bandgap and potential for efficient light absorption make it a candidate for next-generation solar cells and infrared detectors. Its development reflects ongoing efforts to engineer semiconductors with improved stability and performance compared to conventional materials like CdTe or CIGS, though it remains largely in the laboratory stage rather than widespread commercial deployment.

photovoltaic researchinfrared detectorsoptoelectronic devices
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K2CuIn3Se6

semiconductor

K2CuIn3Se6 is a quaternary chalcogenide semiconductor compound belonging to the ternary sulfide/selenide family of materials, synthesized primarily for photovoltaic and optoelectronic research applications. This material is largely experimental and studied for thin-film solar cells and related energy conversion devices due to its tunable bandgap and layered crystal structure, positioning it as a potential alternative to more mature semiconductors like CIGS (Cu(In,Ga)Se2) in next-generation photovoltaic architectures.

thin-film solar cellsphotovoltaic researchoptoelectronic devices
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K2CuNbS4

semiconductor

K2CuNbS4 is a ternary sulfide semiconductor compound combining potassium, copper, niobium, and sulfur. This material is primarily of research interest for photovoltaic and optoelectronic applications, where layered metal sulfides are explored as alternatives to conventional semiconductors; it belongs to the broader family of transition-metal chalcogenides known for tunable band gaps and potential use in solar cells, photodetectors, and quantum devices.

photovoltaic researchoptoelectronic devicesphotodetectors
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K2CuNbSe4

semiconductor

K2CuNbSe4 is a quaternary chalcogenide semiconductor compound composed of potassium, copper, niobium, and selenium. This material belongs to the family of layered metal chalcogenides and is primarily investigated in research contexts for its potential in photovoltaic and thermoelectric applications, where its tunable bandgap and layered crystal structure offer advantages over conventional semiconductors in energy conversion efficiency and thermal management.

photovoltaic devicesthermoelectric applicationsresearch semiconductors
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K2CuVS4

semiconductor

K2CuVS4 is a quaternary sulfide semiconductor compound containing potassium, copper, vanadium, and sulfur. This is a research-phase material being investigated for its electronic and optical properties within the broader family of mixed-metal sulfides, which show promise as photovoltaic absorbers, thermoelectric materials, and catalysts. The vanadium-copper sulfide chemistry is of particular interest for photocatalytic applications and as an alternative absorber layer in thin-film solar devices, though industrial deployment remains limited and material processing methods are still under development.

photovoltaic absorber layersphotocatalytic materialsthermoelectric applications
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K2Dy2Ti3O10

semiconductor

K2Dy2Ti3O10 is a mixed-metal oxide ceramic compound containing potassium, dysprosium, and titanium, belonging to the family of layered perovskite or Aurivillius-phase oxides. This material is primarily studied in research contexts for its potential in photocatalytic and ferroelectric applications, leveraging the rare-earth element (dysprosium) to enhance functional properties. Engineers and researchers explore such materials as candidates for advanced ceramic devices where controlled dielectric behavior, optical response, or catalytic activity under specific conditions is needed, though industrial-scale deployment remains limited outside specialized research programs.

photocatalytic water treatment (research)ferroelectric ceramics (experimental)rare-earth oxide semiconductors
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K2FeGe3Se8

semiconductor

K2FeGe3Se8 is a quaternary semiconductor compound combining potassium, iron, germanium, and selenium in a layered crystal structure. This material belongs to the family of metal chalcogenides and is primarily of research and development interest rather than established commercial production. The compound is investigated for potential applications in thermoelectric energy conversion, nonlinear optics, and solid-state electronics where its layered structure and mixed-metal composition could enable tunable electronic and optical properties distinct from simpler binary or ternary semiconductors.

thermoelectric devicesnonlinear optical systemssolid-state research
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K2Ga3CuSe6

semiconductor

K2Ga3CuSe6 is a quaternary semiconductor compound belonging to the metal chalcogenide family, combining potassium, gallium, copper, and selenium in a layered or mixed-valence crystal structure. This is a research-phase material studied primarily for its potential in optoelectronic and thermoelectric applications, particularly in non-linear optical devices and solid-state photovoltaics where its band gap and crystal symmetry may offer advantages over more conventional semiconductors. The material remains largely in the exploratory stage, with interest driven by the possibility of tuning electronic and optical properties through compositional variation within this quaternary system.

research semiconductorsnon-linear opticsphotovoltaic absorbers
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K2Gd2Sb2Se9

semiconductor

K2Gd2Sb2Se9 is a quaternary chalcogenide semiconductor composed of potassium, gadolinium, antimony, and selenium. This is a research-phase compound within the broader family of complex metal chalcogenides, which are investigated for their tunable electronic and thermal properties. While not yet deployed in mainstream industrial applications, materials in this family are of interest for solid-state thermoelectric devices, infrared optics, and next-generation photovoltaic systems where their layered crystal structures and narrow bandgaps offer potential advantages over conventional semiconductors.

thermoelectric devicesinfrared detectorsphotovoltaic research
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K2Gd2Ti3O10

semiconductor

K2Gd2Ti3O10 is a complex layered oxide ceramic compound containing potassium, gadolinium, and titanium. This is an experimental research material belonging to the family of layered perovskite and Aurivillius-phase oxides, primarily investigated for its electronic and ionic transport properties rather than established industrial production.

solid-state electrolytesion conductorssolid oxide fuel cells
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K2Ge2PbS6

semiconductor

K2Ge2PbS6 is a quaternary semiconductor compound belonging to the metal chalcogenide family, combining alkali metals (potassium), group IV elements (germanium and lead), and sulfide anions in a layered crystalline structure. This material is primarily investigated in research contexts for infrared photonics and nonlinear optical applications, where its sulfide chemistry offers potential advantages in wavelength conversion and mid-infrared sensing compared to more conventional semiconductors.

infrared optics researchnonlinear optical devicesmid-infrared detectors
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K2Ge3B2O10

ceramic

K2Ge3B2O10 is a potassium germanate borate ceramic compound that combines germanium oxide and boric oxide constituents in a crystalline structure. This material belongs to the family of heavy-metal oxide glasses and ceramics, primarily investigated in research contexts for optical and electronic applications rather than established industrial production. The germanate-borate system is notable for its potential in infrared optics, radiation shielding, and specialized glass compositions where the combination of germanium's high refractive index and boron's glass-forming capability offers advantages over conventional silicate alternatives.

infrared optical componentsradiation shielding materialsspecialized glass compositions
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K2Ge3(BO5)2

ceramic

K2Ge3(BO5)2 is a rare earth borate-germanate ceramic compound combining potassium, germanium, and boron oxide phases into a complex crystal structure. This material is primarily of research and academic interest rather than established industrial production, being studied for its optical, thermal, or structural properties within the broader family of boron-based ceramics and germanate glasses.

optical components (research)high-temperature ceramics (experimental)neutron shielding (potential)
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K2Ge4Se8

semiconductor

K2Ge4Se8 is a quaternary semiconductor compound belonging to the family of metal chalcogenides, specifically a potassium germanium selenide. This is a research-stage material studied for its potential in infrared optics and nonlinear optical applications, where the combination of heavy metal cations and selenide anions can produce wide bandgaps and strong light-matter interactions. The material represents an emerging class of alternative semiconductors for mid- to far-infrared detection and frequency conversion, with advantages over conventional materials in specific transparency windows and nonlinear coefficients.

infrared optics and detectorsnonlinear optical devicessemiconductor research
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K2Hg3Ge2S8

semiconductor

K2Hg3Ge2S8 is a quaternary semiconductor compound combining mercury, germanium, sulfur, and potassium—a research-phase material belonging to the family of metal chalcogenides. This compound is primarily investigated for its potential in nonlinear optical applications and photonic devices, where its sulfide-based structure offers tunable electronic and optical properties distinct from simpler binary or ternary semiconductors. While not yet established in mainstream industrial production, materials in this class are of interest to researchers developing next-generation infrared optics, frequency conversion devices, and specialized detectors where traditional semiconductors reach their performance limits.

Nonlinear optical devicesInfrared optics researchPhotonic materials development
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K2Hg3(GeS4)2

semiconductor

K2Hg3(GeS4)2 is a ternary semiconductor compound combining potassium, mercury, germanium, and sulfur in a layered crystal structure. This is a research-phase material studied for its potential in infrared photonics and nonlinear optical applications, belonging to the broader family of metal chalcogenide semiconductors that show promise for mid-infrared wavelength conversion and sensing.

infrared optics and photonicsnonlinear optical devicesmid-infrared detection
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K2Hg3S1.03Se2.97

semiconductor

K2Hg3S1.03Se2.97 is a mixed-chalcogenide semiconductor compound combining potassium, mercury, sulfur, and selenium in a quaternary phase. This is a research-level material within the mercury chalcogenide family, which has been explored for infrared sensing and photonic applications due to the tunable bandgap achievable through sulfur-selenium substitution. The sulfur-selenium mixed anion system allows engineers to optimize optical and electronic properties for detection in the infrared spectrum, though such quaternary compositions remain primarily in academic investigation rather than established industrial production.

infrared detectorsphotonic research devicesnarrow-bandgap semiconductors
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K2Hg3S2.69Se1.31

semiconductor

K2Hg3S2.69Se1.31 is an experimental mixed-chalcogenide semiconductor compound combining potassium, mercury, sulfur, and selenium in a quaternary phase. This material belongs to the family of mercury-based chalcogenides, which are primarily investigated in research settings for their unique electronic and optical properties arising from the partial substitution of sulfur with selenium. While not yet widely deployed in commercial applications, materials in this class are of interest for narrow-bandgap semiconductor devices and optoelectronic research where the tunable composition allows control of electronic properties.

research semiconductorsnarrow-bandgap optoelectronicsinfrared detector development
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K2Hg3Se1.31S2.69

semiconductor

K2Hg3Se1.31S2.69 is a mixed chalcogenide semiconductor compound combining potassium, mercury, selenium, and sulfur in a layered crystal structure. This is a research-phase material studied for its tunable band gap and anisotropic electronic properties, typical of heavy-metal chalcogenide systems; it represents the broader family of metal chalcogenides being explored for next-generation optoelectronic and thermoelectric devices. While not yet commercialized, compounds in this chemical family are of interest where traditional semiconductors are limited by bandgap, charge carrier mobility, or radiation tolerance requirements.

experimental optoelectronicsinfrared detectorsthermoelectric devices
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K2Hg3Se2.97S1.03

semiconductor

K2Hg3Se2.97S1.03 is a mixed-anion semiconductor compound combining potassium, mercury, selenium, and sulfur in a layered or framework crystal structure. This is a research-phase material belonging to the family of mercury chalcogenides, which are being explored for specialized photonic and electronic applications where the tunable bandgap and heavy-element composition offer advantages over conventional semiconductors.

photonic devices (research)infrared detection (developmental)nonlinear optical applications
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K2Hg3Sn2S8

semiconductor

K2Hg3Sn2S8 is a ternary sulfide semiconductor compound combining potassium, mercury, and tin in a complex crystal structure. This is a research-phase material studied primarily for its electronic and photonic properties within the broader family of metal sulfide semiconductors, which show promise for optoelectronic and thermoelectric applications where conventional materials face limitations.

photonic devicesthermoelectric conversionexperimental semiconductors
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K2HgP2Se6

semiconductor

K2HgP2Se6 is a ternary semiconductor compound combining potassium, mercury, phosphorus, and selenium elements, belonging to the family of heavy-metal chalcogenide semiconductors. This is primarily a research material investigated for its nonlinear optical properties and potential mid-infrared photonic applications; it is not yet widely deployed in commercial products. The material's mercury and selenium composition positions it within an experimental class of compounds studied for frequency conversion, laser systems, and radiation detection, though practical adoption remains limited due to toxicity concerns and competing established alternatives in these markets.

nonlinear optical devicesmid-infrared photonics (research)frequency conversion (experimental)
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K2Hg(PSe3)2

semiconductor

K2Hg(PSe3)2 is a ternary metal chalcogenide semiconductor compound containing potassium, mercury, and phosphorus–selenium building blocks. This is primarily a research material studied for its potential in solid-state electronics and photonic applications, as compounds in this family are investigated for tunable band gaps, ion-transport behavior, and nonlinear optical properties.

experimental semiconductorssolid-state photonicsion-conducting materials
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K2Ho4Cu4S9

semiconductor

K2Ho4Cu4S9 is an experimental ternary sulfide semiconductor compound containing potassium, holmium, and copper. This material belongs to the family of mixed-metal chalcogenides, which are of significant research interest for their tunable electronic and photonic properties. While not yet commercialized, such compounds are being investigated for potential applications in next-generation photovoltaics, thermoelectrics, and optoelectronic devices due to their layered crystal structures and ability to exhibit unusual band gap characteristics compared to conventional semiconductors.

photovoltaic researchthermoelectric materials developmentoptoelectronic devices
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K2In2P3Se10

semiconductor

K2In2P3Se10 is a quaternary semiconductor compound containing potassium, indium, phosphorus, and selenium. This material belongs to the family of mixed-anion semiconductors and is primarily of research interest for optoelectronic and photovoltaic applications due to its tunable bandgap and layered crystal structure. While not yet widely commercialized, compounds in this family are investigated for next-generation solar cells, nonlinear optical devices, and IR detectors where the combination of elements enables bandgap engineering and enhanced light-matter interactions.

Research photovoltaicsNonlinear optical materialsInfrared detectors
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K2In3AgSe6

semiconductor

K2In3AgSe6 is a quaternary semiconductor compound belonging to the family of mixed-metal chalcogenides, combining potassium, indium, silver, and selenium in a crystalline structure. This material is primarily of research interest for optoelectronic and photovoltaic applications, where its tunable bandgap and potential for efficient light absorption make it a candidate for next-generation solar cells and photodetectors; however, it remains largely in the experimental stage with limited commercial deployment compared to established semiconductor alternatives like silicon or CdTe.

experimental photovoltaicsphotodetectorsnonlinear optics
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K2In3CuSe6

semiconductor

K2In3CuSe6 is a quaternary semiconductor compound belonging to the family of multi-element chalcogenides, combining potassium, indium, copper, and selenium in a layered crystal structure. This material is primarily of research interest for photovoltaic and optoelectronic applications, where its bandgap and electronic properties position it as a potential alternative to traditional II-VI or I-III-VI2 semiconductors. The compound represents exploratory work in thin-film solar cells and thermoelectric devices, where designers seek materials with tunable band structures and reduced toxicity compared to cadmium- or lead-based alternatives.

photovoltaic absorber layersthin-film solar cellsoptoelectronic devices
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K2La2Sb2S9

semiconductor

K2La2Sb2S9 is a quaternary sulfide semiconductor compound containing potassium, lanthanum, and antimony. This is an experimental research material investigated primarily for its optical and electronic properties within the broader family of rare-earth chalcogenide semiconductors. Compounds in this material class are being explored for infrared photonics, solid-state lighting, and scintillator applications where rare-earth doping and sulfide host matrices offer tunable bandgaps and luminescent properties; however, K2La2Sb2S9 remains at the laboratory stage and is not yet established in commercial production or mainstream engineering applications.

infrared optics (research stage)rare-earth photonics (exploratory)scintillation detector development
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K2La2Ti3O10

semiconductor

K2La2Ti3O10 is a layered perovskite oxide ceramic semiconductor composed of potassium, lanthanum, titanium, and oxygen. This material belongs to the Ruddlesden-Popper family of layered perovskites, which are primarily of research interest for photocatalytic and ionic transport applications rather than established industrial products. The layered structure and semiconductor properties make it a candidate material for photocatalysis, ion-exchange membranes, and functional ceramics, though engineering adoption remains limited to specialized research and development contexts.

photocatalytic water splittingion-exchange membranesresearch semiconductors
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K2Mn3S4

metal

K₂Mn₃S₄ is an ternary metal sulfide compound combining potassium, manganese, and sulfur, representing a mixed-valent transition metal sulfide chemistry. This is a research-phase material studied primarily in solid-state chemistry and materials science contexts, with potential applications in energy storage, catalysis, and semiconductor research rather than established commercial use. Its notable features stem from the redox activity of manganese and the structural flexibility of the sulfide framework, making it of interest as a candidate material for battery cathodes, electrocatalysts, and other functional compounds where sulfide-based transition metal compounds show promise over conventional oxides.

battery cathode materials (research)electrocatalysissolid-state energy storage
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K2MnSn2Se6

semiconductor

K2MnSn2Se6 is a quaternary chalcogenide semiconductor compound composed of potassium, manganese, tin, and selenium. This is a research-phase material studied primarily in solid-state chemistry and materials science for its potential in thermoelectric and photovoltaic applications, belonging to the broader family of complex metal chalcogenides that combine multiple cations to engineer electronic band structures. The material is notable for its layered crystal structure and tunable electronic properties through cation doping, making it of interest for next-generation energy conversion devices where conventional semiconductors face efficiency or cost limitations.

thermoelectric power generationphotovoltaic researchsolid-state energy conversion
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K2Mn(SnSe3)2

semiconductor

K2Mn(SnSe3)2 is a quaternary semiconductor compound combining potassium, manganese, tin, and selenium in a layered or framework crystal structure. This is a research-phase material explored primarily for its semiconductor and potential optoelectronic properties, belonging to the broader family of metal chalcogenides used in photovoltaics and light-emission applications. The compound's multi-element composition offers tunable electronic properties and potential advantages in band gap engineering compared to simpler binary or ternary semiconductors, though industrial deployment remains limited and applications are primarily in materials research and device prototyping.

Experimental photovoltaic researchOptoelectronic device prototypingBand gap engineering
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K2MnSnSe4

semiconductor

K2MnSnSe4 is a quaternary chalcogenide semiconductor compound composed of potassium, manganese, tin, and selenium. This is a research-phase material under investigation for its potential optoelectronic and thermoelectric properties, belonging to the broader family of multinary semiconductors that exhibit tunable bandgaps and mixed-valence capabilities. The manganese and tin cations combined with selenide provide opportunities for applications requiring non-toxic alternatives to heavy-metal-based semiconductors, though practical industrial deployment remains exploratory.

photovoltaic researchthermoelectric devicesoptoelectronic components
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K2Mo2Se2O11

semiconductor

K2Mo2Se2O11 is a mixed-metal oxide semiconductor compound containing potassium, molybdenum, and selenium in an oxidized framework. This is a research-phase material primarily studied for its electronic and photocatalytic properties within the broader family of polyoxometalates and layered metal chalcogenides. Industrial adoption remains limited; applications are being explored in photocatalysis, energy storage, and optoelectronic devices where the semiconductor bandgap and structural tunability offer potential advantages over conventional binary oxides.

photocatalytic water splittingenvironmental remediation catalystsoptoelectronic research devices
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K2NbCuS4

semiconductor

K2NbCuS4 is an experimental ternary sulfide semiconductor compound containing potassium, niobium, copper, and sulfur. This material belongs to the family of layered metal sulfides and is primarily studied in research contexts for photovoltaic and thermoelectric applications, where its narrow bandgap and mixed-metal composition offer potential advantages over single-element semiconductors. Interest in this compound stems from the possibility of engineering band structure and transport properties through compositional tuning, though it remains largely confined to laboratory investigation rather than commercial deployment.

photovoltaic researchthin-film solar cellsthermoelectric devices
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K2NbCuSe4

semiconductor

K2NbCuSe4 is a quaternary chalcogenide semiconductor compound containing potassium, niobium, copper, and selenium. This is an experimental research material belonging to the family of complex metal selenides, currently investigated for potential optoelectronic and photovoltaic applications where layered or ternary chalcogenides show promise. The material's interest lies in tunable electronic structure and potential high absorption coefficients typical of semiconducting selenides, though it remains primarily in early-stage development rather than established commercial use.

photovoltaic researchsemiconductor optoelectronicsexperimental thin films
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K2NbO6

ceramic

K2NbO6 (potassium niobate) is a ceramic compound belonging to the family of niobate perovskites, which are inorganic materials with layered or framework crystal structures. This material is primarily investigated in research and development contexts for applications requiring high dielectric strength, ferroelectric properties, or ionic conductivity, making it relevant to advanced ceramic device development rather than mainstream industrial production. Its selection over conventional ceramics would depend on specific requirements for electrical, thermal, or structural performance in specialized environments such as energy storage, sensor technology, or solid-state applications.

ceramic sensorsdielectric materialsenergy storage research
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K2Nd2Ti3O10

semiconductor

K2Nd2Ti3O10 is a layered perovskite oxide ceramic compound containing potassium, neodymium, and titanium. This material is primarily investigated in research contexts for photocatalytic and ferroelectric applications, belonging to the family of Aurivillius-phase oxides that combine complex layered structures with semiconducting behavior. The layered architecture and rare-earth doping make it a candidate for environmental remediation and energy conversion technologies where engineered band gap and surface reactivity are advantageous over conventional oxide semiconductors.

photocatalysis and water treatmentferroelectric thin filmsvisible-light responsive semiconductors
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K2O

ceramic

K₂O (potassium oxide) is an inorganic ceramic compound and a basic oxide that serves primarily as a precursor and constituent in glass and ceramic formulations rather than as a standalone structural material. It is widely employed in glass manufacturing, particularly in soda-lime-silicate and borosilicate glass production, where it acts as a flux to lower melting temperatures and improve workability. K₂O is also used in ceramic glazes, refractories, and specialty materials such as potassium silicate coatings; engineers select it for applications requiring controlled glass transition behavior, chemical durability, or thermal stability in high-temperature environments.

glass manufacturing (container, flat, specialty)ceramic glazes and coatingsrefractory compositions
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K2O2

ceramic

K₂O₂ (potassium peroxide) is an inorganic ceramic compound belonging to the peroxide family of materials. It is primarily encountered in research and specialized industrial contexts rather than mainstream engineering applications, where it functions as an oxidizing agent, oxygen source, or reactive intermediate in chemical processing. K₂O₂ is notable for its strong oxidizing properties and potential use in closed-loop life support systems, oxygen generation, and advanced catalytic applications, though handling challenges and reactivity with moisture limit its adoption compared to more stable ceramic alternatives.

oxygen generation systemsspacecraft life supportchemical synthesis
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K2P2Se6

semiconductor

K₂P₂Se₆ is a layered chalcogenide semiconductor composed of potassium, phosphorus, and selenium. This is a research-phase material currently explored primarily in academic and laboratory settings for its unique crystal structure and electronic properties. The material belongs to a family of two-dimensional and quasi-2D semiconductors being investigated for next-generation optoelectronic and quantum electronic devices, where its layered geometry and tunable band gap could offer alternatives to more established materials like transition metal dichalcogenides (TMDs) and black phosphorus.

research semiconductors2D materialsoptoelectronics (experimental)
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K2PAuS4

semiconductor

K2PAuS4 is an experimental ternary semiconductor compound containing potassium, phosphorus, gold, and sulfur elements, representing a niche composition in the broader family of mixed-metal chalcogenides and precious-metal semiconductors. This material remains largely in research and development phase, with potential applications in optoelectronics, photovoltaics, and specialized electronic devices where the unique electronic structure offered by gold incorporation might provide advantages in carrier transport or optical properties. Engineers would consider this compound primarily in early-stage device development rather than established manufacturing, where the chemical incorporation of a precious metal offers distinct electronic benefits unavailable in conventional semiconductor alloys.

Experimental semiconductor researchOptoelectronic device developmentPhotovoltaic research
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K2PbGe2S6

semiconductor

K2PbGe2S6 is a quaternary sulfide semiconductor compound combining potassium, lead, and germanium elements in a layered crystal structure. This material is primarily investigated in research contexts for nonlinear optical and infrared photonics applications, where its wide bandgap and sulfide chemistry offer potential advantages in mid-infrared wavelength regions where conventional oxide semiconductors become opaque. The compound represents an emerging class of chalcogenide semiconductors attractive for specialized optoelectronic devices, though it remains largely in the experimental stage rather than mainstream industrial production.

nonlinear optical devicesmid-infrared detectorsinfrared photonics research
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