Seebeck Coefficient and Optical Studies of Cadmium Doped CuInS2 Single Crystal
S.H. Chaki
Department of Physics, Sardar Patel University, Vallabh Vidyanagar - 388 120, Gujarat, India
Received: January 15, 2009; In final form: April 16, 2009
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Single crystals of CuInS2 were successfully grown by chemical vapor transport technique using iodine as transporting agent. The as grown chemical vapor transport CuInS2 single crystals were found to have large resistivity. To decrease the resistivity of the crystals they were doped with three different cadmium concentrations. Seebeck coefficient variation with temperature is measured for all the three doped samples. Optical bandgaps were determined for these three doped samples using optical absorption spectra. The obtained results are discussed in detail.
DOI: 10.12693/APhysPolA.116.221
PACS numbers: 71.20.Nr, 72.20.Pa, 78.20.-e, 61.50.-f