Abstract

This paper investigates the hydrogen plasma treatment effects on the interface of Au/CdZnTe contact. Hydrogen plasma with high energy is the smallest and lightest atomic mass, which is easy to enter into the crystal surface to fill the vacancy defects. The Au/CdZnTe samples were treated by the microwave hydrogen plasma with the power of 60W (average power density of 0.5W/cm2) and the frequency of 13.6MHz under different treatment times. Scanning electron microscope (SEM), current–voltage (I–V) and adhesion strength measurement were performed to analyze the interface properties of Au/CdZnTe before and after the hydrogen plasma treatment. The results show that the hydrogen plasma treatment can reduce the surface leakage current, decrease the point defects and improve the performance of the electrode contacts.

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