Thermally and photo-induced changes in the valence states of vapour-deposited As2S3 films: A comparative photoemission study of As2S3 and As4S4 |
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| Authors: | T Takahashi Y Harada |
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| Institution: | Department of Chemistry, College of General Education, The University of Tokyo, Komaba, Meguro, Tokyo 153, Japan |
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| Abstract: | During thermal annealing or light irradiation, the changes in the valence states of vapour-deposited As2S3 and As4S4 films were observed by UPS. The experimental results reveal that an as-deposited As2S3 film contains considerable numbers of As4S4 molecular units, which polymerize or cross link to form a As2S3 glassy network on annealing or irradiation. |
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