Abstract
The absorption spectra of thin films of the solid electrolytes MAg4I5 (M = K, Rb) doped with copper (0 ≤ x ≤ 0.15) are studied in the spectral range 2–6 eV at temperatures of 90 and 290 K. It is established that the critical Cu content reaches x crit = 0.05. A decrease in the Cu content to x ≤ 0.05 leads to the formation of MAg4 − 4x Cu4x I5 solid solutions, and the films remain spectrally stable. At x > 0.05, the films segregate into different phases: MAg4 − 4x Cu4x I5, Ag1 − x CuxI, and M 2AgI3.
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Original Russian Text © O.N. Yunakova, V.K. Miloslavsky, E.N. Kovalenko, 2006, published in Fizika Tverdogo Tela, 2006, Vol. 48, No. 5, pp. 602–605.
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Yunakova, O.N., Miloslavsky, V.K. & Kovalenko, E.N. Effect of copper impurities on the absorption spectrum of thin films of superionic conductors MAg4I5 (M = K, Rb). Phys. Solid State 48, 841–845 (2006). https://doi.org/10.1134/S1063783406050052
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DOI: https://doi.org/10.1134/S1063783406050052