Cu2ZnSnSe4

semiconductor

· Cu2ZnSnSe4

Cu2ZnSnSe4 (copper zinc tin selenide) is a quaternary semiconductor compound belonging to the kesterite family, structurally similar to CIGS (copper indium gallium selenide) but using earth-abundant elements instead of rare indium and gallium. This material is primarily investigated for thin-film photovoltaic applications, where it offers potential cost and sustainability advantages over conventional solar cells; however, it remains largely in research and early-stage development, with conversion efficiencies and stability still below commercial standards compared to silicon, CdTe, and established CIGS solar technologies.

thin-film solar cellsphotovoltaic researchsustainable energy conversionearth-abundant semiconductorsexperimental optoelectronicsnext-generation PV materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.440	eV	—

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.

Cu2ZnSnSe4

Electrical Properties

Regulatory Screening

Environmental

Export Control