Quantum dot infrared photodetector (QDIP) shows more superior characteristics; however, the low absorption rate is still the fundamental factor restricting the performance of the detector. So in our paper, the QDIP is improved by introducing the metal structure with the strips and holes to increase absorptivity. The results demonstrate that the enhanced QDIP can greatly improve the photon absorptivity up to 98.92% as a result of the local coupling surface plasmon effect, which is 1.23 times than that of the conventional photodetectors without the metal array structures.

中文翻译：

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引入金属纳米结构层提高了量子点红外光电探测器的吸收率

量子点红外光电探测器（QDIP）具有更优越的性能；但是，低吸收率仍然是限制检测器性能的基本因素。因此，在我们的论文中，通过引入带有条带和孔的金属结构以提高吸收率来改善QDIP。结果表明，由于局部耦合表面等离子体激元效应，增强的QDIP可以极大地提高光子吸收率，达到98.92％，是没有金属阵列结构的传统光电探测器的1.23倍。