Electrical Conductivity of Phenoxazine-Iodine (2:3) and Phenothiazine-Iodine (2:3) Crystals |
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| Authors: | Ajay T Oza |
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| Institution: | Department of Physics , Sardar Patel University , Vallabh Vidyanagar, 388120, Gujarat, India |
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| Abstract: | Abstract Single crystals of phenoxazine-iodine (2 : 3) and phenothiazine-iodine (2 : 3) salts are found to be highly conducting (sgrave] R.T. = 5–20 ohm?1 cm?1). The observed deviation from the exponential temperature dependence of the conductivities is ascribed to the degenerate semiconducting phases or alternatively to the metallic phases with impurities. However, phenoxazine-iodine and phenothiazine-iodine are perfect semiconductors below 220° K with activation energies of 0.12 eV and 0.14 eV, respectively. The absorption features related with (phenoxazine)+ 2 and (phenothiazine); cations are observed in the infrared spectra of the salts. |
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