Bi4 S4 Br4

semiconductor

· Bi4 S4 Br4

Bi₄S₄Br₄ is a mixed-halide bismuth chalcogenide semiconductor compound combining bismuth, sulfur, and bromine in a layered crystal structure. This is primarily a research material being investigated for optoelectronic and photovoltaic applications, particularly where tunable band gap and anisotropic electronic properties are valuable. The mixed halide-chalcogenide composition represents an emerging class of materials with potential advantages in perovskite-alternative solar cells, photodetectors, and quantum device platforms where conventional semiconductors face limitations.

photovoltaic research devicesphotodetector prototypesoptoelectronic semiconductorsperovskite alternativesquantum materials researchexperimental solid-state devices

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	3,729.1	ksi	—
Shear Modulus(G)	1,785	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.968	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.6120	eV/atom	—

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

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.

Bi4 S4 Br4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control