CuBr — Properties & Data | MatWorld

CuBr

semiconductor

· CuBr

Copper(I) bromide (CuBr) is a binary semiconductor compound with zinc blende crystal structure, combining copper and bromine in a 1:1 stoichiometric ratio. Historically used in photography and as a catalyst in organic synthesis, CuBr has attracted renewed interest in optoelectronics and thin-film device research due to its direct bandgap and potential for cost-effective semiconductor applications. Its relatively low thermal conductivity and layered exfoliation energy suggest potential for 2D material derivatives and heterostructure engineering, though it remains primarily a research material rather than a high-volume industrial semiconductor.

optoelectronic researchthin-film semiconductorsphotocatalysisorganic synthesis catalysts2D material derivativeslaboratory photography applications

Compliance & Regulations

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

Units:

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Method

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)2 entries	42.86	GPa	DFT
↳	24.37	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	75.37	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3300	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	12.75	GPa	DFT
↳	10.32	GPa	DFT · OptB88vdW

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
Thermal Conductivity(k)	2.750	W/(m·K)	Measured

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Property	Value	Unit	Conditions	Source
Density(ρ)	5.396	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions	Source
Band Gap(Eg)3 entries	3.080	eV	Measured
↳	0.6320	eV	DFT · OptB88vdW
↳	1.546	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	11.57	-	DFT · PBE
↳	18.83	-	DFT · OptB88vdW
↳	11.48 range 10.20–12.76median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.845	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.2100	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.510	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.000	C/m²	DFT · OptB88vdW
↳	0.1795	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.000392	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00235	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-62.28	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	356.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	31.73	%	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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Method

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01770	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.2551	eV/atom	DFT · OptB88vdW
↳	-0.5421	eV/atom	Measured

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

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.