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Reference.org
Bismuth telluride
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<p>Bismuth telluride (Bi2Te3) is a gray powder that is a compound of <a href="/facts/Bismuth/75FLjkoX">bismuth</a> and <a href="/facts/Tellurium/v7QvfIvS">tellurium</a> also known as bismuth(III) telluride. It is a <a href="/facts/Semiconductor/zFf3mGTE">semiconductor</a>, which, when alloyed with <a href="/facts/Antimony/YsA7lVgT">antimony</a> or <a href="/facts/Selenium/k975NApC">selenium</a>, is an efficient <a href="/facts/Peltier_effect/GbRYmwIG">thermoelectric</a> material for refrigeration or portable power generation. Bi2Te3 is a <a href="/facts/Topological_insulator/pbrbxG9X">topological insulator</a>, and thus exhibits thickness-dependent physical properties. </p>