Surface photovoltage spectroscopy study of CdS thin films |
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Authors: | S Simov M Kalitzova E Nikolova I Baltov |
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Institution: | Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Lenin Boulevard, Sofia 1112, Bulgaria |
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Abstract: | The method of surface photovoltage spectroscopy has been applied to the study of the surface properties of thin CdS films deposited by vacuum evaporation. The energy spectrum of the surface states is obtained and their kinetic parameters are calculated. A comparison is made of the results obtained in air and in vacuum for non-recrystallized and recrystallized samples. The results for thin films are compared with the data on monocrystal CdS in the literature. It is assumed that the surface states established in the films are of a donor-like type. |
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