Commercial orange and yellow GaAs1-xPx LEDs were irradiated by 2 MeV electrons with fluences of <$E10 sup 14 ~-~2~cdot~10 sup 16> cm<^>-2, and their electrophysical characteristics were investigated in the current and voltage generators modes. It has been shown that point radiation defects introduced into GaAs1-xPx diodes reduce the electrical conductivity of the base. The series and parallel resistances of the device increase, compensating the electrical conductivity of the base and reducing the probability of forming the avalanche breakdown channels. Negative differential resistance regions that appear in current-voltage characteristics are the result of the presence of a GaP sublattice in the solid solution. During irradiation, the switching voltage into the low-level state increases due to expansion of junction depleted region. The streamlined currents increase after irradiation is caused by changing in the free path length of charge carriers.

• Оліх Ярослав Михайлович (фізико-математичні науки)
• Тартачник Володимир Петрович (фізико-математичні науки)

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