CuBS2 — Properties & Data | MatWorld

CuBS2

Name: CuBS2
Brand: MatWorld

semiconductor

· CuBS2

CuBS₂ is a copper-based ternary semiconductor compound combining copper, boron, and sulfur elements. This material belongs to the family of chalcogenide semiconductors and remains primarily in research and development phase, with potential applications in photovoltaic devices, photodetectors, and optoelectronic systems where earth-abundant alternatives to conventional semiconductors are sought. Its notable advantage lies in using relatively accessible elements compared to rare-earth or cadmium-based semiconductors, making it attractive for cost-sensitive and sustainable technology platforms, though commercial deployment remains limited pending further optimization of synthesis and device integration methods.

thin-film photovoltaicsphotodetectorsoptoelectronic devicesearth-abundant semiconductorsresearch materialsquantum dot precursors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	114.2	GPa	DFT
Shear Modulus(G)	63.24	GPa	DFT

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.021	kg/m³	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	3.610	eV	Measured
↳	1.872	eV	DFT · OptB88vdW
↳	2.202	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	9.518	-	DFT · OptB88vdW
↳	9.650	-	DFT · PBE
↳	9.239 range 8.717–9.761median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.268	-	DFT · OptB88vdW
↳	7.991	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.5500	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.100	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.5062	C/m²	DFT · OptB88vdW
↳	0.00248	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00105	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00238	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-130.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	373.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	18.69	%	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)	-0.4223	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.

CuBS2

Mechanical Properties

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