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Surface photovoltage spectroscopy measurements are performed for Cd0.85.Mn0.15. Te single crystals with surface orientation (110) in the temperature range between 85 and 300 K at a pressure of 10−5 Pa. The linear dependence on temperature of the energy gap and the energy of the levels connected with manganese are stated and the temperature coefficients are determined. The energotic scheme of the surface layer at 85 K is proposed.

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The energetic positions Et of the shallow states for variously prepared CdTe (110) surface are determined, basing on results of surface photovoltage spectroscopy(SPS) measurements in the temperature range between 80 and 300 K. The measurements are performed with the Kelvin method using a modified measuring system.