Electromagnetic Modeling and Design of Quantum Well Infrared Photodetectors

被引：28

作者：

Choi, Kwong-Kit ^{[1
]}

Jhabvala, Murzy D. ^{[2
]}

Forrai, David P. ^{[3
]}

Waczynski, Augustyn ^{[2
]}

Sun, Jason ^{[1
]}

Jones, Robert ^{[3
]}

机构：

[1] US Army Res Lab, Adelphi, MD 20833 USA

[2] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] L 3 Cincinnati Elect, Mason, OH 45040 USA

来源：

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2013年 / 19卷 / 05期

关键词：

Electromagnetic field modeling; infrared detector; quantum efficiency (QE);

D O I：

10.1109/JSTQE.2012.2216861

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The quantum efficiency (QE) of a quantum well infrared photodetector (QWIP) is historically difficult to predict and optimize. This difficulty is due to the lack of a quantitative model to calculate QE for a given detector structure. In this paper, we found that by expressing QE in terms of a volumetric integral of the vertical electric field, the QE can be readily evaluated using a finite element electromagnetic solver. We applied this model to all known QWIP structures in the literature and found good agreement with experiment in all cases. Furthermore, the model agrees with other theoretical solutions, such as the classical solution and the modal transmission-line solution when they are available. Therefore, we have established the validity of this model, and it can now be used to design new detector structures with the potential to greatly improve the detector QE.

引用

页数：10

共 19 条

[1] System considerations in the design of QWIP-based thermal imagers [J].