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Influence of samarium on optical absorption in thin films of the solid electrolyte RbAg4I5

  • Semiconductors and Insulators
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Abstract

The fundamental optical absorption of films of the solid electrolyte RbAg4I5 electrolyte films decreases (by approximately 25%) after vacuum evaporation of Sm films onto them, and a broad strong-absorption band with a maximum at 2.4 eV appears within the bad gap. The films bleach after 5–10 days in dry air. The observed phenomena are attributed to a high concentration (∼3×1020 cm−3) of point defects, including F-centers, in nonstoichiometric RbAg4I5:Sm, and also to the oxidation of Sm. In colored films the ionic conductivity is σ⋍0.9σ 0, and in bleached films it is close to the initial value σ 0.

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Authors and Affiliations

  1. Institute of Problems in the Technology of Microelectronics and High-Purity Materials, Russian Academy of Sciences, 142432, Chernogolovka, Moscow Province, Russia

    A. L. Despotuli & L. A. Despotuli

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  1. A. L. Despotuli
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  2. L. A. Despotuli
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Fiz. Tverd. Tela (St. Petersburg) 39, 1544–1547 (September 1997)

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Despotuli, A.L., Despotuli, L.A. Influence of samarium on optical absorption in thin films of the solid electrolyte RbAg4I5 . Phys. Solid State 39, 1374–1377 (1997). https://doi.org/10.1134/1.1130082

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  • DOI: https://doi.org/10.1134/1.1130082

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