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Current voltage measurements of a photodetector with a diameter.
Responsivity of a diameter photodetector for different reverse bias voltages.
Voltage dependence of the quantum efficiency and capacitance for diode.
Spectral quantum efficiency of the photodetector after 0, 20, and recess etch of the top dielectric film.
Temporal pulse response of the micron diameter photodiodes under reverse bias voltage and the corresponding frequency response (inset).
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