Cs2TeI6

Name: Cs2TeI6
Brand: MatWorld

semiconductor

· Cs2TeI6

Cs₂TeI₆ is a halide perovskite semiconductor composed of cesium, tellurium, and iodine. This compound belongs to the emerging class of inorganic perovskites and is primarily investigated as a material for optoelectronic devices, particularly photovoltaic and light-emission applications. Unlike organic-inorganic hybrid perovskites, its all-inorganic composition offers improved thermal and chemical stability, making it attractive for research into next-generation solar cells, X-ray detectors, and scintillation devices where long-term durability is critical.

perovskite solar cellsX-ray detection and imagingscintillation countersoptoelectronic researchradiation detectionphotovoltaic materials (experimental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	1,131.5	ksi	DFT
Shear Modulus(G)	577.3	ksi	DFT

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1723	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	1.500	eV	Measured
↳	1.224	eV	DFT · OptB88vdW
↳	1.627	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	12.91	-	DFT · PBE
↳	8.501 range 5.992–11.01median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	6.256	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.3100	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.070	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.00236	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00242	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-170.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	338.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	30.45	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.8819	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

Export Control

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.

Cs2TeI6 — Properties & Data | MatWorld

Cs2TeI6

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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