K1.25Pb3.5Bi7.25Se15

semiconductor
· K1.25Pb3.5Bi7.25Se15

K1.25Pb3.5Bi7.25Se15 is a mixed-metal selenide compound belonging to the chalcogenide semiconductor family, combining potassium, lead, and bismuth with selenium in a layered or complex crystal structure. This is an experimental research material, not a commercialized engineering product, primarily studied for thermoelectric and ionically-conductive applications due to the presence of mobile alkali metal (K) cations and the heavy metal constituents (Pb, Bi) that enhance phonon scattering. The material family shows promise for next-generation thermoelectric devices and solid-state electrolytes where low thermal conductivity and tunable band structure are advantageous, though development is still in the laboratory phase and industrial viability remains to be established.

thermoelectric energy conversion (research)solid-state electrolytes (exploratory)low-temperature semiconductorsphonon engineering (phonon scattering)materials discovery (lead-free alternatives)high-Z semiconductor compounds

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Band Gap(Eg)
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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.