MeV proton and neutron damage effects on deep-ultraviolet light-emitting diodes
Jian-Sian Li,
Chao-Ching Chiang,
Hsiao-Hsuan Wan
et al.
Abstract:270 nm deep-ultraviolet AlGaN light-emitting diodes were irradiated with either neutrons or 15 MeV protons. Neutrons produced via charge-exchange reactions of 9Be with protons exhibited energy ranges from 0 to 33 MeV, with an average energy of approximately 9.8 MeV. The fluences ranged from 1.1 × 1014 to 2.2 × 1014 neutrons cm−2 and 1013 or 1014 protons cm−2. Two primary degradation modes were observed: increased trap-assisted tunneling, indicated by an initial reduction in turn-on voltage, and a decrease in c… Show more
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