Electrical properties of CuTlSe2 in the liquid state |
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| Authors: | A. H. Abou El Ela N. Abdelmohsen H. H. A. Labib |
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| Affiliation: | (1) Physics Department, Islamic Girls College, Nasr City, Cairo;(2) Physics Department, Faculty of Education, Ain Shams University, Cairo, Egypt;(3) Present address: Faculty of Education, Medina, Saudia Arabia |
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| Abstract: | The electrical conductivity and thermoelectric power of CuTlSe2 have been investigated as a function of temperature up to 230 °C above its melting point. In the liquid state the experimental data are analyzed in terms of a model developed for the density of states and electrical transport in solid amorphous semiconductors (Mott, 1970). Positive thermoelectric power suggests a large predominance of holes in electrical conduction. It appears that the conduction is due to holes in extended states near the band edge. It is found that the energy gap has a large temperature coefficient  =5.5×10–4eV/K. |
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| Keywords: | 72.20 |
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