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从介观压阻效应出发,结合晶体的热膨胀,分析热应变对量子阱红外探测器的影响。其中,热膨胀指的是晶体的温度发生变化时所产生的应变现象。分析过程中,利用量子阱探测器的能带结构公式,获得能带结构与温度的关系。量子阱红外探测器的能带结构是通过电子波干涉法计算得到的。在此基础上,可以进一步分析温度的变化对光电流谱的影响,从而探讨量子阱红外探测器的带宽问题。
Based on the mesoscopic piezoresistive effect and the thermal expansion of the crystal, the influence of thermal strain on the quantum well infrared detector is analyzed. Among them, thermal expansion refers to the crystal phenomenon occurs when the temperature changes. In the process of analysis, the relationship between band structure and temperature is obtained by using the band structure formula of quantum well detector. The energy band structure of the quantum well infrared detector is calculated by the electronic wave interference method. Based on this, the influence of the change of temperature on the photocurrent spectrum can be further analyzed, and the bandwidth of the quantum well infrared detector can be discussed.