Effect of cobalt impurities on the electrical and photoelectrical properties of GaS single crystals |
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| Authors: | BG Tagiyev GM Niftiyev SM Bashirov DS Azhdarova |
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| Institution: | Groupe d''Etudes des Semiconducteurs (LA 357) USTL, Pl. E. Bataillon, 34060- Montpellier-Cedex, France;Dept. of Electrical Engineering, Concordia University, 1455 De Maisonneuve, Brd W, Montreal, Quebec H3G 1M8, Canada;Physico Chimie des Matériaux (LA 407) USTL Pl. E. Bataillon, 34060- Montpellier-Cedex, France |
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| Abstract: | Static dark current-voltage characteristics (CVC's), the temperature dependence of electric conductivity σ(T)], the currents of thermostimulated depolarization (TSD), the spectral distribution of photoconductivity (SDPC) and photoluminescence (PL) have been studied in GaS 〈0.1 at % Co〉 single crystals.The results of complex investigations of CVC's, σ(T) dependences, TSD, the SDPC and PL show that the forbidden gap of GaS 〈0.1 at % Co〉 single crystals exhibits acceptor levels (EV + 0.26 and EV + 0.63 eV). |
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