Influence of hydrogen passivation on the infrared spectra of Hg0.8Cd0.2Te

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Abstract
Hydrogen passivation has been investigated in Hg0.8Cd0 2Te using infrared transmission measurements. The ability of atomic hydrogen to passivate the activities of residual impurities or defects is demonstrated by the fact that the absorption edge is moved to the short wave direction and the absorption below the energy gap is reduced after the incorporation of atomic hydrogen using an rf glow discharge system. It is also found that Hg vacancies can be effectively passivated after hydrogenation. Hydrogen injection and passivation of residual impurities or defects are also observed in Hg0.8Cd0.2Te boiled in water.