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Reference.org
Lead telluride
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<p>Lead telluride is a compound of <a href="/facts/Lead_(element)/EYljasJN">lead</a> and <a href="/facts/Tellurium/v7QvfIvS">tellurium</a> (PbTe). It crystallizes in the NaCl crystal structure with Pb atoms occupying the cation and Te forming the anionic lattice. It is a narrow gap semiconductor with a band gap of 0.32 eV. It occurs naturally as the mineral <a href="/facts/Altaite/CpfJvCXa">altaite</a>. </p>