Bonding of third additive with Se & Te alters DC conductivity of ternary ChGs

Selenium (Se) has proved its potential in wide commercial applications. Its device applications like switching, memory and Xeroxing etc. made it attractive. It also exhibits a unique property of reversible transformation.1 This property makes it very useful in optical memory devices. But in pure state it has some disadvantages because of its short lifetime and low sensitivity. To overcome these difficulties certain additives are used and binary and ternary chalcogenide glasses are obtained e.g. the addition of small percentage of Sb is sufficient to cause crystallization of Se.2−4