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Physical properties of n-CdGeAs2 single crystals prepared by low-temperature crystallization

  • Semiconductors. Dielectrics
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Abstract

The first results obtained in studies of the temperature dependences of electrical conductivity and Hall constant of n-CdGeAs2 single crystals prepared by low-temperature crystallization are reported. It has been established that the method developed permits growing single crystals with a free-electron concentration ⋍(1−2)×1018 cm−3 and a Hall mobility ⋍10000 cm2/(Vs) at T=300 K. It is shown that the temperature dependence of Hall mobility exhibits a behavior characteristic of electron scattering by lattice vibrations, whereas below 150 K a deviation from this law is observed to occur evidencing an increasing contribution of static lattice defects to scattering. The Hall mobility in the crystals prepared was found to reach ⋍36000 cm2/(Vs) at 77 K. Photosensitive heterojunctions based on n-CdGeAs2 single crystals were prepared. The spectral response of the photosensitivity of these structures is analyzed. It is concluded that this method is promising for preparation of perfect CdGeAs2 crystals.

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Fiz. Tverd. Tela (St. Petersburg) 41, 1190–1193 (July 1999)

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Polushina, I.K., Rud’, Y.V., Ushakova, T.N. et al. Physical properties of n-CdGeAs2 single crystals prepared by low-temperature crystallization. Phys. Solid State 41, 1084–1087 (1999). https://doi.org/10.1134/1.1130941

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  • DOI: https://doi.org/10.1134/1.1130941

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