Bi4 S4 I4
semiconductor· Bi4 S4 I4
Bi₄S₄I₄ is a layered bismuth chalcohalide semiconductor composed of bismuth, sulfur, and iodine elements. This is a research-phase compound that belongs to the family of mixed-halide and chalcogenide semiconductors, which are actively investigated for optoelectronic and photovoltaic applications due to their tunable bandgaps and potential lower toxicity compared to lead-based perovskites. The material's layered crystal structure and composition make it a candidate for next-generation thin-film solar cells, photodetectors, and light-emitting devices, though it remains largely in experimental development stages rather than established industrial production.
experimental photovoltaic devicesthin-film solar cellsphotodetectorsoptoelectronic researchhalide perovskite alternativesmaterials chemistry research
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | Pa | — | — | |
Shear Modulus(G) | — | Pa | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.