Er2Te3 — Properties & Data | MatWorld

Er2Te3

Name: Er2Te3
Brand: MatWorld

semiconductor

· Er2Te3

Er₂Te₃ is a ternary semiconductor compound composed of erbium and tellurium, belonging to the rare-earth telluride family of materials. This is primarily a research-stage compound studied for its electronic and thermal properties, rather than a mainstream commercial material; it represents the broader class of rare-earth chalcogenides being investigated for thermoelectric conversion, infrared optics, and solid-state device applications where the rare-earth dopant can provide unique optical and electronic tunability.

thermoelectric generatorsinfrared detectors and opticsresearch semiconductorsrare-earth photonic devicesthermal energy harvesting

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2547	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)2 entries	0.9000	eV	Measured
↳	0.5870	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	10.36	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.3400	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.5033	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00230	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00166	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-176.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	182	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)	-1.428	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

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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.

Er2Te3

Physical Properties

Electrical Properties

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