13 August 1997 Nuclear radiation effects on GaAs/AlGaAs quantum well infrared photodetectors: II
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Abstract
We study the effect of high energy proton, alpha, oxygen ion, and gold ion radiation on the performance of GaAs/AlGaAs quantum well infrared photodetectors. The particle energies of proton, alpha and oxygen ions ranged from 0.8 MeV to 30 MeV and the fluences varied from 1010 to 1016 cm-2. The energy of Au ions was 1.5 GeV and the fluence ranged from 106 to 109 cm-2. Dark current and spectral response of irradiated devices were measured. For one set of samples, dark current noise and detectivity were also measured. A device operability defined by the fractional reduction of detector responsivity was used to evaluate the performance degradation. Device operability degrades with fluence for all particles. It also degrades with the mass of the ion and with the decrease in the energy of the particle.
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Hui Chun Liu, L. Li, Shyam M. Khanna, Margaret Buchanan, "Nuclear radiation effects on GaAs/AlGaAs quantum well infrared photodetectors: II", Proc. SPIE 3061, Infrared Technology and Applications XXIII, (13 August 1997); doi: 10.1117/12.280390; https://doi.org/10.1117/12.280390
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