Pb4 I4 Br4

semiconductor

· Pb4 I4 Br4

Pb₄I₄Br₄ is a lead halide perovskite semiconductor combining iodide and bromide ligands, synthesized as a research compound for optoelectronic applications. This mixed-halide material belongs to the emerging class of metal halide perovskites, which are under investigation for next-generation photovoltaics, light-emitting devices, and radiation detection due to their tunable bandgap, strong light absorption, and solution-processability. The iodide-bromide composition allows bandgap engineering relative to single-halide analogues, making it relevant for tandem solar cell architectures and color-tunable emitters, though stability and lead toxicity remain engineering challenges driving ongoing research toward safer alternatives.

perovskite solar cellslight-emitting diodes (research)radiation detectorsbandgap engineeringoptoelectronic devices (developmental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.533	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.8040	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.

Pb4 I4 Br4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control