Progress on nBn infrared detectors
Author:
Affiliation:

1.Shanghai Institute Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;2.Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China;3.State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;4.Institute of Optoelectronics, Shanghai Frontier Base of Intelligent Optoelectronics and Perception, Fudan University, Shanghai 200433, China;5.Frontier Institute of Chip and System, Fudan University, Shanghai 200433, China

Clc Number:

TN2

Fund Project:

Supported by the National key research and development program during the “14th Five-Year Plan” (2021YFA1200700), Natural Science Foundation of China (62025405 and 61835012), Strategic Priority Research Program of the Chinese Academy of Sciences (XDB44000000), Science and Technology Commission of Shanghai Municipality (2151103500).

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    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.

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SHI Qian, ZHANG Shu-Kui, WANG Jian-Lu, CHU Jun-Hao. Progress on nBn infrared detectors[J]. Journal of Infrared and Millimeter Waves,2022,41(1):139~150

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History
  • Received:December 26,2021
  • Revised:January 10,2022
  • Adopted:January 07,2022
  • Online: January 12,2022
  • Published: