TlGaSe2 — Properties & Data | MatWorld

TlGaSe2

Name: TlGaSe2
Brand: MatWorld

semiconductor

· TlGaSe2

TlGaSe2 is a ternary III-VI semiconductor compound composed of thallium, gallium, and selenium, belonging to the family of layered chalcogenide semiconductors. This material is primarily investigated in research contexts for infrared optics and nonlinear optical applications, where its wide bandgap and anisotropic crystal structure enable efficient light modulation and frequency conversion in the mid- to far-infrared spectrum. While not yet widely deployed in mainstream industrial production, TlGaSe2 represents a promising alternative to conventional crystals like cadmium telluride and selenium for specialized optoelectronic devices where thermal stability, optical transparency, and nonlinear response are critical—making it of particular interest to researchers developing tunable lasers, infrared detectors, and parametric amplifiers.

infrared opticsnonlinear optical crystalsparametric amplifiersinfrared detectorstunable laser systemsresearch/experimental compound

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	4,686.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	2,383	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2427	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	0.5940	eV	DFT · OptB88vdW
↳	1.158	eV	DFT · TBmBJ
↳	1.650	eV	Measured
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	10.11	-	DFT · OptB88vdW
↳	7.498	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.7833	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.980	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00217	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00121	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-218.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	233.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.82	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5756	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

TlGaSe2

Mechanical Properties

Physical Properties

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Other Properties

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