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Level recombination model of the GaN UV-blue LED. RD and Si stand for shallow donors, SA for shallow acceptors, DLD and DLA for deep levels behaving as donors and acceptors, respectively, and YBA for the deep acceptors involved in the yellow luminescence. The UV and visible emissions at the p-side region are explained by a simple 3-level system involving levels 2, 1 and 0.
© 1998 The Materials Research Society
