设计了一种太赫兹量子阱光电探测器(THz-QWP),并利用该器件研究了多体效应。通过表征和分析器件的光电流谱,发现多体效应改变了器件的峰值响应频率,并且引起了双响应峰现象,从而验证了多体效应能加深有效势阱深度并增大基带与第一激发能级态之间的间距。因此,在THz-QWP的结构设计中,考虑多体效应具有重要意义。 A terahertz quantum well photodetector (THz-QWP) was designed and used to study the multi-body effect. By characterizing and analyzing the photocurrent spectrum of the device, it was found that the multi-body effect changed the peak response frequency of the device and caused a double response peak phenomenon, which verified that the multi-body effect could deepen the effective potential well and increase the ratio of the baseband to the first excitation The level between the state level. Therefore, in the structural design of THz-QWP, considering the multi-body effect is of great significance.