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通过对p型量子阱红外探测器(QWIP)的自洽计算,得到了量子阱价带的电子结构和器件的光电流谱,并研究了载流子在动量空间分布对p型QWIP光谱响应的影响.计算结果表明,在动量空间不同区域的空穴对器件的光谱响应起着不同作用,从而使得在p型QWIP中,空穴浓度和温度都将影响器件的响应光谱.所得结果合理地解释了实验中器件响应光谱随掺杂浓度和温度的变化.
The electronic structure of the quantum well valence band and the photocurrent spectrum of the device were obtained by the self-consistent calculation of the p-type quantum well infrared detector (QWIP). The spectral response of the carrier in the momentum space distribution to the p-type QWIP The calculated results show that the cavities in different regions of the momentum space play different roles in the spectral response of the device, so both the hole concentration and the temperature will affect the response spectrum of the device in the p-type QWIP. The results obtained are reasonably explained The experimental device response spectrum with doping concentration and temperature changes.