Funct. Mater. 2020; 27 (1): 24-28.


Development of epoxy composite protective coatings for increasing the radiation stability of n-Ge single crystals

Yu.A.Udovytska1, V.T.Maslyuk2

1Lutsk National Technical University, 75 Lvivska Str., 43018 Lutsk, Ukraine
2Institute of Electronic Physics, National Academy of Sciences of Ukraine, 21 Universitetska Str., 88017 Uzhghorod, Ukraine


On the basis of Hall effect measurements, the temperature dependences of electrical conductivity and Hall constant were obtained for irradiated electrons with energy of 10 MeV and the flow of electrons Ω = 5·1015 el/cm2 of n-Ge single crystals coated with a layer of epoxy resin ED-20 with hardener PEPA (12 parts by weight), without and with fillers of iron or aluminum powders (30 parts by weight). From the analysis of the experimental results and theoretical calculations, it follows that the presence of such a coating layer increases the radiation resistance of germanium single crystals. It has been found that the best shielding ability from electron irradiation is provided by a layer of epoxy resin with a powder of iron. The obtained epoxy composite coatings can be used for germanium based semiconductor electronics as protective elements from the aggressive effects of radiation fields.

Hall effect, epoxy resin, germanium single crystals, electronic irradiation, radiation defects.

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