Infrared and Laser Engineering, Volume. 52, Issue 4, 20220655(2023)

Research of Au-doped LWIR HgCdTe detector

Linwei Song, Jincheng Kong*, Peng Zhao, Jun Jiang, Xiongjun Li, Dong Fang, Chaowei Yang, and Chang Shu
Author Affiliations
  • Kunming Institute of Physics, Kunming 650223, China
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    Figures & Tables(11)
    Depth distributions of Au atom concentration in Au-doped HgCdTe materials annealed in an Hg-rich state
    Carrier concentration and mobility of Au-doped HgCdTe materials annealed in an Hg-rich state
    Dark current distribution of the 256×256 (30 μm pitch) LWIR HgCdTe detectors. (a) Intrinsic VHg doping; (b) Extrinsic Au-doping
    Dark current versus temperature for Au-doped LWIR HgCdTe detectors
    Dark current with Au-doped LWIR HgCdTe detectors
    LW 256×256 (30 μm pitch) detector. (a) FPA photo; (b) Response signal diagram ; (c) NETD histogram
    LW 640×512 (25 μm pitch) detector. (a) FPA photo; (b) Response signal diagram; (c) NETD histogram
    LW 640×512 (15 μm pitch) detector. (a) FPA photo; (b) Response signal diagram; (c) NETD histogram
    LW 1 024×768 (10 μm pitch) detector. (a) FPA photo; (b) Response signal diagramg; (c) NETD histogram
    NETD and bad pixels versus storage time of Au-doped LWIR HgCdTe 256×256 detector
    • Table 1. Typical performance parameters of Au-doped LWIR HgCdTe detectors with different scale

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      Table 1. Typical performance parameters of Au-doped LWIR HgCdTe detectors with different scale

      Kunming Institute of PhysicsSofradir
      MARSVENUSSCORPIO
      Format256×256640×512640×5121024×768320×256384×288640×512
      Pixel pitch/μm30251510302515
      Cut-off wavelength/μm10.510.39.89.59.59.59.3
      Operating temperature/K77777770808080
      FOVF2 F2 F2 F3 F2 F2 F2
      NETD/mK10.419.123.127.7≤19≤17≤22
      Responsivity non-uniformity3.87%5.45%4.82%4.52%---
      Average peak detectivity2.33×10111.86×10111.62×10113.45×1011---
      Array operability99.90%99.90%99.87%99.79%≥99.70%≥99.50%≥99.80%
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    Linwei Song, Jincheng Kong, Peng Zhao, Jun Jiang, Xiongjun Li, Dong Fang, Chaowei Yang, Chang Shu. Research of Au-doped LWIR HgCdTe detector[J]. Infrared and Laser Engineering, 2023, 52(4): 20220655

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    Paper Information

    Category: Infrared technology and application

    Received: Jan. 20, 2023

    Accepted: --

    Published Online: Jul. 4, 2023

    The Author Email: Kong Jincheng (jinchengkong@gmail.com)

    DOI:10.3788/IRLA20220655

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