Cu2 Bi2 Se2 O2

semiconductor

· Cu2 Bi2 Se2 O2

Cu₂Bi₂Se₂O₂ is a mixed-valence copper bismuth selenide oxide semiconductor, representing an experimental multinary compound combining p-block elements (Bi, Se) with transition metal (Cu) in an oxide framework. This material family is primarily investigated in research contexts for thermoelectric and optoelectronic applications, where layered or mixed-anion structures can enable tunable band gaps, low thermal conductivity, and enhanced charge carrier mobility compared to binary semiconductors.

thermoelectric energy conversion (research)optoelectronic devices (experimental)solid-state cooling (development)photovoltaic absorbers (exploratory)high-temperature electronics (advanced research)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	82.29	GPa	—
Shear Modulus(G)	32.61	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.03740	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.7350	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.

Cu2 Bi2 Se2 O2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control