Influence of gamma radiation on the spectral characteristics of heterophotoconverters with microrelieved surface on the heteroboundary

Applied Solar Energy - Tập 43 - Trang 1-2 - 2007
M. Mirzabaev1, K. Rasulov1, A. A. Abakumov1
1Physicotechnical Institute NPO Fizika-Solntse, Academy of Sciences of Uzbekistan Republic, Uzbekistan

Tóm tắt

The properties are studied of the microrelieved heterophotoconverters (MHPCs) that are based on the GaAs-AlGaAs system with a microrelieved surface on the heteroboundary that is obtained by the capillary liquid-phase epitaxy method. It is shown that these structures have high rectification coefficient and high current sensitivity in the shortwave region of the spectrum. We examine the influence of γ rays of dosage 2 × 107 R on the dark VACs and the spectral characteristics of these MHPCs. One of the reasons for the relatively low radiation resistance of the MHPC in comparison with the HPC with the smooth surface may be the defects of the active region of the heterostructures that form in the anisotropic etching of nGaAs.

Tài liệu tham khảo

Gorbach, T.Ya., Pidlisnyi, E.V., and Svechnikov, S.V., Morphology and Optical Properties of Anisotropically Etched Gallium Arsenide, Optoelektronika i Poluprovodnikovaya Tekhnika, 1988, no. 13, pp. 34–39.

Rasulov, K., Fabrication of Photoconverters Based on Hetrostructures with Surface microrelief, Poverkhnost’. Roentgenovskie, Sinkhrotronnye i Neitronnye Issledovaniya, 2006, no. 8, pp. 55–57.

Dmitruk, N.L., Borkovskaya, O.Yu., Konakova, R.V., et al., Influence of Gamma Radiation on the Photoconversion Characteristics of the Metallic Gallium Arsenide Barrier Structures with Textured Interface, ZhTF, 2002, vol. 72, no. 6, pp. 44–49.

Mirzabaev, M., Rasulov, K., Komilov, A., et al., Study of the VACs of the Microrelieved Heterophotoconverters before and after Gamma Radiation, Proc. of Int. Conf.: Fundamental and Applied Problems of Physics, Devoted to the 90th Anniversary of the Birthday of Academician S.A. Azimov, 2004, Tashkent, pp. 304–305.

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Applied Solar Energy

Tập 43

1-2

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