Improved Optical and ESD Characteristics for GaN-Based LEDs With an $\hbox{n}^{-}\hbox{-GaN}$ Layer
2011
Nitride-based light-emitting diodes (LEDs) with an n - -GaN layer are proposed and fabricated. By providing a larger series resistance in the vertical direction, it was found that the n - -GaN layer could enhance LED output intensity due to the enhanced current spreading. It was also found that LEDs with n - -GaN layer thicknesses of 0.15, 0.2, and 0.25 μm could endure electrostatic discharge surges up to -1200, - 1800, and -3000 V, respectively.
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