High quantum efficiency GaP avalanche photodiodes.

Dion McIntosh, Qiugui Zhou, Yaojia Chen, Joe C Campbell

Index: Opt. Express 19(20) , 19607-12, (2011)

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Abstract

Gallium Phosphide (GaP) reach-through avalanche photodiodes (APDs) are reported. The APDs exhibited dark current less than a pico-ampere at unity gain. A quantum efficiency of 70% was achieved with a recessed window structure; this is almost two times higher than previous work.© 2011 Optical Society of America