Geiger-mode operation of back-illuminated GaN avalanche photodiodes

J. L. Pau*, R. McClintock, K. Minder, C. Bayram, P. Kung, M. Razeghi, E. Muñoz, D. Silversmith

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


The authors report the Geiger-mode operation of back-illuminated GaN avalanche photodiodes. The devices were fabricated on transparent AlN templates specifically for back illumination in order to enhance hole-initiated multiplication. The spectral response in Geiger-mode operation was analyzed under low photon fluxes. Single photon detection capabilities were demonstrated in devices with areas ranging from 225 to 14063 μ m2. Single photon detection efficiency of 20% and dark count rate <10 kHz were achieved in the smallest devices.

Original languageEnglish (US)
Article number041104
JournalApplied Physics Letters
Issue number4
StatePublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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