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- W2040851858 abstract "We report a systematic study of time-resolved and power-dependent photoresponse in high-efficiency germanium quantum dot photodetectors (Ge-QD PDs), with internal quantum efficiencies greater than 100% over a broad wavelength, reverse bias, and incident power range. Turn-on and turn-off response times (τon and τoff) are shown to depend on series resistance, bias, optical power, and thickness (WQD) of the Ge-QD layer, with measured τoff values down to ∼40 ns. Two different photoconduction regimes are observed at low and high reverse bias, with a transition around −3 V. A transient current overshoot phenomenon is also observed, which depends on bias and illumination power." @default.
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- W2040851858 date "2012-10-15" @default.
- W2040851858 modified "2023-10-12" @default.
- W2040851858 title "Transient photoresponse and incident power dependence of high-efficiency germanium quantum dot photodetectors" @default.
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- W2040851858 doi "https://doi.org/10.1063/1.4759252" @default.
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