Bi4 Se4 I4

semiconductor

· Bi4 Se4 I4

Bi₄Se₄I₄ is a layered halide semiconductor composed of bismuth, selenium, and iodine, representing an emerging class of mixed-halide perovskite-like compounds under active research. This material is primarily investigated for optoelectronic and photovoltaic applications due to its tunable bandgap, strong light absorption, and potential for solution-processed device fabrication. While not yet commercialized at scale, compounds in this family are notable alternatives to lead-based perovskites because they offer comparable electronic properties with reduced toxicity concerns, making them attractive for next-generation solar cells, photodetectors, and scintillators in research and development settings.

perovskite solar cellsphotodetectorsradiation detectionoptoelectronic deviceslead-free semiconductorsresearch materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	20.30	GPa	—
Shear Modulus(G)	9.180	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.512	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.4350	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 Se4 I4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control