K2TeI6 — Properties & Data | MatWorld

K2TeI6

Name: K2TeI6
Brand: MatWorld

semiconductor

· K2TeI6

K2TeI6 is a halide perovskite semiconductor compound combining potassium, tellurium, and iodine. This is primarily a research material studied for optoelectronic and photovoltaic applications, representing the broader family of lead-free halide perovskites being explored as safer alternatives to conventional perovskite solar cells. Engineers investigating this compound are typically motivated by its potential for tunable bandgap, solution processability, and reduced toxicity compared to lead-based perovskites, though commercial-scale production and long-term stability remain active research challenges.

perovskite solar cellsphotovoltaic researchoptoelectronic deviceslead-free semiconductorsthin-film electronicsphotodetectors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	1,963.8	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3400	-	DFT · OptB88vdW
Shear Modulus(G)	773.1	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1553	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	1.600	eV	DFT · OptB88vdW
↳	1.982	eV	DFT · TBmBJ
↳	1.380	eV	Measured
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.773	-	DFT · OptB88vdW
↳	6.447	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.8867	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.297	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00137	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000764	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-235.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	315.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	23.37	%	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)	-0.7941	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

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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.

K2TeI6

Mechanical Properties

Physical Properties

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