Articles you may be interested inPhotocurrent spectrum study of a quantum dot single-photon detector based on resonant tunneling effect with near-infrared response Appl. Phys. Lett. 105, 031114 (2014); 10.1063/1.4890022 Excitonic enhancement of nonradiative energy transfer from a quantum well in the optical near field of energy gradient quantum dots Appl. Phys. Lett. 100, 241109 (2012); 10.1063/1.4724109 Time-resolved photocurrents in quantum well/dot infrared photodetectors with different optical coupling structures Appl. Phys. Lett. 100, 043502 (2012); 10.1063/1.3678637Bias and temperature dependence of the escape processes in quantum dots-in-a-well infrared photodetectors A field effect enhanced quantum dot resonant tunneling diode is proposed and demonstrated to improve the detection dynamic range for low light imaging application. Using the cross-wire device geometry, a lateral two dimensional electron gas ͑2DEG͒ current is formed in the quantum well channel together with the normal resonant tunneling current for quantum dot modulation. A peak photoresponsivity of the order of 10 10 A / W and a light detection saturation level up to 10 5 photons per second at 77 K are achieved when the 2DEG current makes the main photocurrent contribution.
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