Nuclear radiation effects on GaAs/AlGaAs quantum well infrared photodetectors: II

Hui Chun Liu; L. Li; Shyam M. Khanna; Margaret Buchanan

doi:10.1117/12.280390

13 August 1997 Nuclear radiation effects on GaAs/AlGaAs quantum well infrared photodetectors: II

Hui Chun Liu, L. Li, Shyam M. Khanna, Margaret Buchanan

Proceedings Volume 3061, Infrared Technology and Applications XXIII; (1997) https://doi.org/10.1117/12.280390
Event: AeroSense '97, 1997, Orlando, FL, United States

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.

Citation Download Citation

Hui Chun Liu, L. Li, Shyam M. Khanna, and Margaret Buchanan "Nuclear radiation effects on GaAs/AlGaAs quantum well infrared photodetectors: II", Proc. SPIE 3061, Infrared Technology and Applications XXIII, (13 August 1997); https://doi.org/10.1117/12.280390

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