Efficiency peaking in red-light-emitting gallium-phosphide diodes

Efficiency peaking in red-light-emitting gallium-phosphide diodes

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Measurements of the variation of efficiency with current of gallium-phosphide diodes emitting light at 690nm have shown a consistent relationship between the peak quantum efficiency and the current at which this peak occurs. This can be related to the number of zinc-oxygen pairs in nearest-neighbour states.


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