Gain and bandwidth of InP nanowire array photodetectors with embedded photogated InAsP quantum discs
Hossein Jeddi, Mohammad Karimi, Bernd Witzigmann, Xulu Zeng, Lukas Hrachowina, Magnus T. Borgström, Håkan Pettersson
Abstract
(gain 0.2)@20 mW with a detector bias of 3.5 V, in excellent agreement with the proposed two-trap model. Finally, a small signal optical AC analysis was made both experimentally and theoretically to investigate the influence of the interface traps on the detector bandwidth. While the traps limit the cut-off frequency to around 10 kHz, the maximum operating frequency of the detectors stretches into the MHz region.
Topics & Concepts
PhotodetectorNanowireOptoelectronicsMaterials scienceQuantum efficiencyBandwidth (computing)QuantumOpticsPhysicsTelecommunicationsComputer scienceQuantum mechanicsNanowire Synthesis and ApplicationsSemiconductor Quantum Structures and DevicesAdvancements in Semiconductor Devices and Circuit Design