| Autor: |
Malakhovska, T. O., Pogodin, A. I., Filep, M. J., Studenyak, Ya. I., Kokhan, O. P., Zubaka, O. V., Izai, V. Yu., Kúš, P. |
| Předmět: |
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| Zdroj: |
Semiconductor Physics, Quantum Electronics & Optoelectronics; 2023, Vol. 26 Issue 2, p152-158, 7p |
| Abstrakt: |
Samples of Ag7+x(P1-xGex)S6 (x = 0, 0.1, 0.25, 0.33, 0.5, 0.75, 1.0) solid solutions were obtained in the form of microcrystalline powders by grinding in an agate mortar. The diffuse reflectance spectra of the obtained Ag7+x(P1-xGex)S6 samples were studied in the spectral range 200 to 1400 nm at 293 K. The spectral dependences were analyzed using multilevel approximation by applying the Kubelka-Munk function and the Tauc method. It has been found that for Ag7+x(P1-xGex)S6 solid solutions, a red shift of the reflection edge beginning is observed with increasing the Ge content. The pseudo-gap values of Ag7+x(P1-xGex)S6 solid solutions was estimated by the Tauc method. It was found that the heterovalent cationic substitution P+5 → Ge+4 within the anionic sublattice leads to a monotonic nonlinear decrease in the pseudo-gap values. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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