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Bismuth selenide : ウィキペディア英語版 | Bismuth selenide
|Section2= |Section3= }} Bismuth selenide (Bi2Se3) is a gray powder that is a compound of bismuth and selenium also known as bismuth(III) selenide. It is a semiconductor and a thermoelectric material. While perfect stoichiometric bismuth selenide should be a semiconductor (with a gap of 0.3 eV) naturally occurring selenium vacancies act as electron donors and it often acts as a semimetal. Topologically protected surface states have been observed in Bismuth selenide which is the subject of ongoing scientific research. ==See also==
*Thermoelectric materials *Thermoelectric effect *Topological insulators
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