High quantum efficiency GaP avalanche photodiodes

Opt Express. 2011 Sep 26;19(20):19607-12. doi: 10.1364/OE.19.019607.

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.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Algorithms*
  • Calibration
  • Equipment Design
  • Gallium / chemistry*
  • Gamma Cameras*
  • Light*
  • Phosphines / chemistry*
  • Transducers

Substances

  • Phosphines
  • gallium phosphide
  • Gallium