O4 S2 Bi4

semiconductor

· O4 S2 Bi4

Bi₄O₄S₂ is a bismuth oxysuflide semiconductor compound combining bismuth, oxygen, and sulfur into a layered crystal structure. This material belongs to the family of mixed-anion semiconductors and is primarily investigated in research contexts for photocatalytic and optoelectronic applications, where its bandgap and crystal anisotropy offer advantages over conventional single-phase semiconductors in light-driven processes.

photocatalysisenvironmental remediationoptoelectronic devicesvisible-light water splittingthin-film semiconductorsresearch/emerging applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	62.79	GPa	—
Shear Modulus(G)	24.25	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.9351	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.110	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.

O4 S2 Bi4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control