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首页> 外文期刊>IEEE Transactions on Electron Devices >Tunable photodetectors based on strain compensated GaInAsSb/AlAsSb multiple quantum wells grown by molecular beam epitaxy
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Tunable photodetectors based on strain compensated GaInAsSb/AlAsSb multiple quantum wells grown by molecular beam epitaxy

机译:基于应变补偿GaInAsSb / AlAsSb分子束外延生长的多量子阱的可调谐光电探测器

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摘要

GaInAsSb/AlGaAsSb strain compensated multiple quantum well (MQW) p-i-n structures grown by molecular beam epitaxy on GaSb substrates have been successfully fabricated into tunable photodiodes, which showed a large photoresponse peak shift up to 30 meV (80 nm) at 77 K under a reverse bias of 10 V due to quantum confined Stark effect (QCSE). The QCSE persists up to room temperature and the values of the excitonic absorption peak shifts agree well with the calculated results. Based on the observed QCSE, an electrically tunable resonant cavity enhanced photodetector with strain compensated MQW structure is proposed and modeled.
机译:通过分子束外延在GaSb衬底上生长的GaInAsSb / AlGaAsSb应变补偿多量子阱(MQW)引脚结构已成功制造为可调光电二极管,该光电二极管在77 K下显示出高达30 meV(80 nm)的大光响应峰位移,反向时由于量子限制的斯塔克效应(QCSE)而产生的10 V偏置电压。 QCSE持续到室温,并且激子吸收峰位移的值与计算结果非常吻合。基于观测到的QCSE,提出并建模了具有应变补偿MQW结构的电可调谐振腔增强光电探测器。

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