Formation and properties of vacuum‐evaporated high conductivity n‐type CdTe film

Abstract

High dark conductivity CdTe films have been prepared by a co‐evaporated process of CdTe and Cd. The structural, electrical and optical properties were investigated. Dark conductivity of the film increased monotonically with an increase of the co‐evaporated Cd. The highest dark conductivity of the film obtained in this experiment was 0.54 ohm‐1 cm‐1. The film structure was of the zinc‐blend type with a preferential orientation of the (111) planes parallel to the substrate and fibers. The crystallinity of the dark films was similar to films without Cd doping. This high dark conductivity film will be useful for thin film CdTe solar cells.