Cd1-xZnxTe photodetectors with transparent conductive ZnO contacts

Abstract High quality Cd 1-x Zn x Te (CZT) films were prepared using the close-spaced sublimation (CSS) technique. CZT film UV (ultraviolet) photodetectors were fabricated with B and Ga co-doped ZnO (BGZO) transparent conductive interdigitated contacts. The contact properties of BGZO/CZT were investigated by the transmission line model (TLM). The results indicate that a good ohmic contact is formed between BGZO and CZT with a very low contact resistivity of about 0.26 Ω·cm 2 . Compared with CZT photodetectors with Au contacts, the detectors with BGZO contacts show a higher value of UV photo response.