Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7940645 | Superlattices and Microstructures | 2017 | 18 Pages |
Abstract
We propose a resonant cavity enhanced (RCE) N-structure type-II superlattice (T2SL) mid-wavelength infrared (MWIR) photodetector which can be used for the detection of methane gas at 3.3 μm. The theoretical analysis of quantum efficiency (QE) shows that the peak QE can be enhanced from 0.45 to 0.80 at 3.3 μm after 12 period AlAs0.09Sb0.91/GaSb DBR is introduced to the N-structure T2SL detector and QE exhibits the narrow bandwidth characteristic near the target wavelength. By analyzing the refractive indices of different materials and the reflectance of different DBRs, we also discuss how to determine the component materials of quarter-wavelength DBR reflectors.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Haoyue Wu, Yun Xu, Jian Li, Yu Jiang, Lin Bai, Hailong Yu, Dong Fu, Haijun Zhu, Guofeng Song,