TRANSPORT-PROPERTIES OF CUINS2, CUINSE2 AND CUINTE2 THIN-FILMS

Transport properties, namely electrical conductivity sigma, Hall coeff icient R(H) and thermoelectric power Q, have been measured for thin fi lms of the ternary chalcopyrite compounds CuInS2, CuInSe2 and CuInTe2 as a function of temperature in the range 80-400 K. The calculated val ues of the carrier concentration for the three compounds showed that a ll films are non-degenerate p-type semiconductors. The effective mass m was found to decrease with increasing temperature. The temperature dependence of the Hall mobility for the three compounds showed that it increases with increasing temperature. The results were analysed in o rder to establish the conduction mechanism in these compounds.