“…The shortcoming of amorphous selenium (a-Se) for use in photographic drum such as its short life time and low sensitivity, can be overcome by the use of certain additives like Ge, Te, Bi, Sb, In, etc. The use of binary alloys has been of great interest for their greater hardiness, higher sensitivity, higher crystallization and smaller aging effect as compared to amorphous selenium [2]. Because of these advantages these alloys are nowdays preferred in various solid state devices.…”