Abstract
The nBn infrared (IR) detector is designed to eliminate the Shockley-Read-Hall (SRH) generation-recombination (G-R) currents, which will effectively reduce the dark current and increase the operating temperature of the detector. Due to the compatibility of the manufacturing process and the existence of a substrate with a perfectly matched lattice, the nBn infrared detectors based on III-V compounds including type-II superlattice (T2SLs) materials have been developed rapidly. Through theoretical simulation, the nBn infrared detector based on the HgCdTe material system can also effectively suppress the dark current. However, the difficulty of removing the valence band barrier hinders HgCdTe nBn infrared detector development. This review will elaborate on the physical mechanism of nBn detectors to suppress dark current, and then introduce the development status and development trend of nBn barrier detectors in different semiconductor materials.
| Translated title of the contribution | nBn红外探测器研究进展 |
|---|---|
| Original language | English |
| Pages (from-to) | 139-150 |
| Number of pages | 12 |
| Journal | Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves |
| Volume | 41 |
| Issue number | 1 |
| DOIs | |
| State | Published - Feb 2022 |
| Externally published | Yes |
Keywords
- HgCdTe
- NBn infrared detector
- Sb-based III-V semiconductor
- Type-II superlattice