K2CuBiBr6 — Properties & Data | MatWorld

K2CuBiBr6

metal

· JVASP-100473· K2CuBiBr6

K2CuBiBr6 is a halide perovskite compound containing potassium, copper, bismuth, and bromine—a member of the double-perovskite family that has emerged as a research material for optoelectronic and photovoltaic applications. This is an experimental compound rather than an established engineering material; it is being investigated primarily for potential use in solar cells, LEDs, and radiation detection due to the stability advantages of double-perovskite structures compared to lead-based alternatives. The bismuth-copper framework offers a more environmentally benign composition while maintaining semiconductor-like electronic properties, making it relevant to researchers developing next-generation low-toxicity photovoltaic and imaging devices.

Perovskite solar cellsLead-free photovoltaicsRadiation detectionOptoelectronic devicesMaterials research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.213	kg/m³	DFT · OptB88vdW

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.7240	eV	DFT · OptB88vdW
↳	0.9970	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.707	-	DFT · OptB88vdW
↳	6.481	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	31.90	%	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)	0.05030	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.058	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.

K2CuBiBr6

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control