Abstract
AN interesting variation of apparent measured intrinsic band gaps of β (low temperature) silver selenide prepared by different methods has been noted. Melt-grown silver selenide has been determined to have a band gap of 0.04–0.1 eV at about 300° K1,2. When prepared as a powder at temperatures under 100° C3 silver selenide has a gap of 0.07–0.1 eV. This same silver selenide when sintered at 200° C (above the β–α phase transition) for 15 min and then remeasured in the same temperature range exhibits a different band gap, 0.2 eV.
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EPSTEIN, A., KULIFAY, S. & STEARNS, R. Energy Gap of β Silver Selenide. Nature 203, 856 (1964). https://doi.org/10.1038/203856b0
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DOI: https://doi.org/10.1038/203856b0
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