Dc current transport behavior in amorphous GeSe films

The dc electric conduction behavior of amorphous GeSe films sandwiched between the Pt bottom electrode and various counter electrodes (Pt, Cr, and Ti) was examined in a voltage as well as a time domain. The time domain investigation identified time-dependent resistance change and relaxation. The voltage domain analysis revealed that the current transport in these metal-insulator-metal junctions is probably attributed to bulk-limited band-conduction due to delocalized charge carriers.