Composition Dependence of Photoconductivity in Chalcoginide Glasses

Abstract : In the present paper our aim is to investigate the composition dependence of photoconductivity and carrier lifetime in Ge2oBixSe80-x glasses with x varying 2 to 12 at. % the average coordination number (Z) of this system varies from 2.4 to 2.52 corresponding to the above variation in x. and also to test whether any special feature is reflected around the critical composition of Ge-Bi-Se glasses at which p n transition has been reported. Key Words : photoconductivity, chalcogenide, FRPC measurements