Cs2CuP3S9

semiconductor

· Cs2CuP3S9

Cs₂CuP₃S₉ is a ternary sulfide semiconductor compound containing cesium, copper, and phosphorus in a mixed-valence framework structure. This material is primarily of research interest for photovoltaic and thermoelectric applications, representing an emerging class of quaternary chalcogenides being explored to replace or complement conventional semiconductors like silicon and cadmium telluride. The presence of copper and heavy-element cesium offers potential for tunable bandgaps and high absorption coefficients, making it a candidate for next-generation thin-film solar cells and solid-state energy conversion devices, though industrial deployment remains limited and the material is currently studied mainly in academic and development laboratories.

experimental photovoltaic devicesthin-film solar cellsthermoelectric energy conversionsemiconducting chalcogenides researchbandgap engineering materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.400	eV	—

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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.

Cs2CuP3S9

Electrical Properties

Regulatory Screening

Environmental

Export Control