Ultraviolet photon counting with GaN avalanche photodiodes

被引:0
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作者
McIntosh, K.A. [1 ]
Verghese, S. [1 ]
Molnar, R.J. [1 ]
Mahoney, L.J. [1 ]
Molvar, K.M. [1 ]
Connors, M.K. [1 ]
Aggarwal, R.L. [1 ]
Melngailis, I.L. [1 ]
机构
[1] Massachusetts Inst of Technology, Lexington, United States
关键词
Avalanche diodes - Electric breakdown - Leakage currents - Nitrides - Photocurrents - Photons - Semiconducting gallium compounds - Semiconductor device structures - Vapor phase epitaxy;
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摘要
Photon counting, or Geiger-mode, measurements of GaAn APDs were carried out. The photon detection efficiency (PDE) at 325 nm and dark count rate were measured as a function of the applied voltage bias. A PDE of 13% was observed at a dark count rate of 400 KHz. The best devices exhibit leakage current less than 20nA at 90% of breakdown voltage.
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页码:169 / 170
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