Tl2Ge2S5 — Properties & Data | MatWorld

Tl2Ge2S5

ceramic

· JVASP-21778· Tl2Ge2S5

Tl2Ge2S5 is a ternary chalcogenide ceramic composed of thallium, germanium, and sulfur. This is a research-phase material studied primarily for infrared optics and photonic applications, where its wide transparency window in the mid- to far-infrared region makes it potentially valuable for thermal imaging, spectroscopy, and sensor windows operating beyond the limits of conventional glasses.

infrared optics and windowsthermal imaging componentsspectroscopic detectorsresearch photonicsexperimental semiconductorsnon-linear optical devices

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.904	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.931	eV	DFT · OptB88vdW
Electron Effective Mass(m*e)	2.753	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.793	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.000625	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000526	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-298.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	268.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	-0.4479	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

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.

Tl2Ge2S5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental