• Infrared and Laser Engineering
  • Vol. 52, Issue 4, 20220655 (2023)
Linwei Song, Jincheng Kong*, Peng Zhao, Jun Jiang..., Xiongjun Li, Dong Fang, Chaowei Yang and Chang Shu|Show fewer author(s)
Author Affiliations
  • Kunming Institute of Physics, Kunming 650223, China
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    DOI: 10.3788/IRLA20220655 Cite this Article
    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 Copy Citation Text show less
    Depth distributions of Au atom concentration in Au-doped HgCdTe materials annealed in an Hg-rich state
    Fig. 1. 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
    Fig. 2. 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
    Fig. 3. 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
    Fig. 4. Dark current versus temperature for Au-doped LWIR HgCdTe detectors
    Dark current with Au-doped LWIR HgCdTe detectors
    Fig. 5. 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
    Fig. 6. 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
    Fig. 7. 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
    Fig. 8. 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
    Fig. 9. 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
    Fig. 10. NETD and bad pixels versus storage time of Au-doped LWIR HgCdTe 256×256 detector
    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%
    Table 1. Typical performance parameters of Au-doped LWIR HgCdTe detectors with different scale
    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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