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US4865655A Gallium arsenide phosphide mixed crystal epitaxial wafer with a graded buffer layer 失效
砷化镓磷化物混晶晶外延晶片具有渐变缓冲层

Gallium arsenide phosphide mixed crystal epitaxial wafer with a graded
buffer layer
摘要:
An epitaxial wafer for producing arrays of GaAsP-LEDs comprises, in the GaAs.sub.1-x P.sub.x layer with varying X, a layer region(s) with a discontinuous variance of x along the thickness of the GaAs.sub.1-x P.sub.x layer. This layer region(s) contribute to a uniformity in the brightness of the light emission of LEDs formed in the epitaxial wafer.
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