Progress on nBn infrared detectors

  • Qian Shi
  • , Shu Kui Zhang*
  • , Jian Lu Wang*
  • , Jun Hao Chu
  • *Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

17 Scopus citations

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 contributionnBn红外探测器研究进展
Original languageEnglish
Pages (from-to)139-150
Number of pages12
JournalHongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves
Volume41
Issue number1
DOIs
StatePublished - Feb 2022
Externally publishedYes

Keywords

  • HgCdTe
  • NBn infrared detector
  • Sb-based III-V semiconductor
  • Type-II superlattice

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