Modification of Conductivity by Sb Addition in Bulk Glasses

In the present paper, I-V characteristics and DC volume conductivity of Se-In-Sb semi-conducting glasses has been discussed. This is an effort towards the understanding of physics of temperature dependence of de electrical volume conductivity of Se-90 In10-x Sb-x (X = 2, 4, 6 & 8) glass in bulk form. These Chalcogenide glasses were prepared by melt quenching (rapid cooling of melt) technique. The amorphous nature of as prepared glass was confirmed by XRD. Using Keithley Electrometer! High resistance Meter 6517 A, the I-V characteristics of these glasses have been recorded in a temperature range from room to 100 degrees C and the voltage range was taken from 10V to 150V for elevated temperatures. Variation in conductivity, derived from I-V curves, as a function of composition of samples is explained on the basis of bonds formed in the system. Additionally, the Poole-Frenkel conduction mechanism has also been verified.