Chemically controlled deep level formation and band bending at metal-CdTe interfaces

Abstract
We have used reactive metal interlayers to suppress anion outdiffusion at Au-CdTe junctions and thereby to alter the formation of deep interfacial states. Using soft x-ray photoemission and luminescence spectroscopies, we report a dramatically reduced p-type band bending and demonstrate that deep levels observed directly at the interface are responsible for the chemically induced electrical behavior.