Kang-Won Kim, Hyun-Gi Hong, June-O Song, Joon-Ho Oh, Tae-Yeon Seong
a b s t r a c tWe report on the formation of low-resistance and transparent p-type ohmic contact for green GaN-based light-emitting diodes (LEDs) using Ni-Co solid solution(5 nm)/Au(5 nm) scheme. The asdeposited Ni-Co solid solution(5 nm)/Au(5 nm) contact shows nonlinear current-voltage (I-V ) characteristics. However, annealing the sample at 550 • C in air results in the formation of ohmic contacts with specific contact resistance of 6.5 × 10 −4 cm 2 . The annealed sample shows light transmittance of 71.7% a…
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