Abstract
To improve the displacement damage test method for compound semiconductor devices in space applications, the degradation of GaAs devices caused by protons with energy ranging from 50 MeV to 190 MeV was analyzed based on experimental and simulation results. Proton experimental results showed that degradation caused by high-energy proton was less than that caused by low-energy proton. The Geant4 simulation results indicated that the Non-ionizing Energy Loss was dominated by Coulomb scattering at low proton energy. The degradation of GaAs devices were thus more influenced by displacement damage dose induced by Coulomb scattering. The equivalent displacement damage dose induced by Coulomb scattering can be utilized to evaluate displacement damage in GaAs devices intended for space application.
Published Version
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