Abstract
Calculated chemical equations using thermodynamics suggest that elemental Te0 is easily induced during bromine-based etching process on the HgCdTe surface and the induced elemental Te0 can be removed by chemical reaction with hydrazine, forming volatile H2Te. X-ray photoelectron spectroscopy (XPS) confirmed these chemical reactions. The induced elemental Te0 is believed to play a role as surface generation-recombination centers in CdTe∕HgCdTe interface, which was confirmed by XPS, ideality factor, and energy-dispersive interface trap density (Dit) analyses.
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