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Higher operating temperature photoresponse of MWIR T2SLs InAs/InAsSb photodetector

机译:MWIR T2SLs InAs / InAsSb光电探测器的更高工作温度光响应

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We investigate the photoresponse of mid-wavelength infrared radiation (MWIR) type-Ⅱ superlattices (T2SLs) InAs/InAsSb high operating temperature (HOT) photoconductor grown on GaAs substrate. The device consists of a 200 periods of active layer grown on GaSb buffer layer. The photoresistor reached a 50% cut-off wavelength of 5 μm and 6 μm at 200 K and 300 K respectively. The time constant of 30 ns is observed at 200 K under 0.5 V bias. This is the first observation of the photoresponse in MWIR T2SLs InAs/InAsSb photocondotocr above 200 K.
机译:我们研究了在GaAs衬底上生长的中波长红外辐射(MWIR)Ⅱ型超晶格(T2SLs)InAs / InAsSb高工作温度(HOT)光电导体的光响应。该器件由在GaSb缓冲层上生长的200个周期的有源层组成。光敏电阻在200 K和300 K时分别达到5μm和6μm的50%截止波长。在200 V,0.5 V偏压下观察到30 ns的时间常数。这是在200 K以上MWIR T2SLs InAs / InAsSb光电导体中光响应的首次观察。

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