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Acta Optica Sinica, Volume. 45, Issue 16, 1604001(2025)

Enhancing X-Ray Detector Performance of 3D Perovskite Single Crystal Detector via 2D Perovskite Microcrystal Surface Passivation

Jie Fu1,2, Hu Wang2,3、*, Pengxiang Wang2,3, Hao Dong1,2, Xingkun Liu4, Shanming Li4, Wenqing Zhang2,3, Zijun Gao1,2, Yin Hang4, and Yuchuan Shao1,2,3,5、**
Author Affiliations
  • 1School of Microelectronics, Shanghai University, Shanghai 201899, China
  • 2Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 3Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 4Research Center of Laser Crystal, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 5School of Physics and Optoelectronic Engineering, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, Zhejiang , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (43)
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    Figures & Tables(11)
    Nucleation curve and concentration of PEA2PbBr4 in HBr

    Fig. 1. Nucleation curve and concentration of PEA2PbBr4 in HBr

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    Basic characterization of CsPbBr3 single crystal. (a) XRD; (b) PL

    Fig. 2. Basic characterization of CsPbBr3 single crystal. (a) XRD; (b) PL

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    TRPL spectra of CsPbBr3 single crystal before and after passivation

    Fig. 3. TRPL spectra of CsPbBr3 single crystal before and after passivation

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    SEM images of CsPbBr3 single crystal passivated with solutions of different concentrations. (a) Without passivation; (b) with passivation, 0.01 mol/L; (c) with passivation, 0.015 mol/L

    Fig. 4. SEM images of CsPbBr3 single crystal passivated with solutions of different concentrations. (a) Without passivation; (b) with passivation, 0.01 mol/L; (c) with passivation, 0.015 mol/L

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    AFM of CsPbBr3 single crystal passivated with solutions of different concentrations. (a) Without passivation; (b) with passivation, 0.01 mol/L; (c) with passivation, 0.015 mol/L

    Fig. 5. AFM of CsPbBr3 single crystal passivated with solutions of different concentrations. (a) Without passivation; (b) with passivation, 0.01 mol/L; (c) with passivation, 0.015 mol/L

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    Basic electrical characterization of CsPbBr3 single crystal X-ray detector. (a) Device structure; (b) voltage-current hysteresis

    Fig. 6. Basic electrical characterization of CsPbBr3 single crystal X-ray detector. (a) Device structure; (b) voltage-current hysteresis

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    Voltage-current response of CsPbBr3 single crystal detector under different X-ray dose rates at 200 V

    Fig. 7. Voltage-current response of CsPbBr3 single crystal detector under different X-ray dose rates at 200 V

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    Detection properties of CsPbBr3 single crystal X-ray detector. (a) Sensitivity; (b) detection limit

    Fig. 8. Detection properties of CsPbBr3 single crystal X-ray detector. (a) Sensitivity; (b) detection limit

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    Long-term stability of CsPbBr3 single crystal detector before and after passivation

    Fig. 9. Long-term stability of CsPbBr3 single crystal detector before and after passivation

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    Imaging results of CsPbBr3 single crystal X-ray detector. (a) Metal mask; (b) X-ray image

    Fig. 10. Imaging results of CsPbBr3 single crystal X-ray detector. (a) Metal mask; (b) X-ray image

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    • Table 1. Summary of performance for different X-ray detectors based on CsPbBr3 single crystal

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      Table 1. Summary of performance for different X-ray detectors based on CsPbBr3 single crystal

      Device structureSensitivity /（μC·Gy-1·cm-2）Detection limit /（μGy·s-1）X-ray /kVBias /（V·mm-1）Ref. No
      Au/PEA2PbBr4/CsPbBr3/Au349463.051205［38］
      Au/Al/BCP/C60/CsPbBr3/Au727213030100［39］
      GaIn/CsPbBr3/Au100002258435［40］
      In/CsPbBr3/Au93090.05450180［41］
      Ag/CsPbBr3/Au227511403.3［42］
      EGaIn/CsPbBr3/Au4618010.81120500［25］
      EGaIn/CsPbBr3/Au3444952.6120266.7［43］
      Ti/CsPbBr3/Ti9240013.830100This work
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    Jie Fu, Hu Wang, Pengxiang Wang, Hao Dong, Xingkun Liu, Shanming Li, Wenqing Zhang, Zijun Gao, Yin Hang, Yuchuan Shao. Enhancing X-Ray Detector Performance of 3D Perovskite Single Crystal Detector via 2D Perovskite Microcrystal Surface Passivation[J]. Acta Optica Sinica, 2025, 45(16): 1604001

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    Paper Information

    Category: Detectors

    Received: Apr. 16, 2025

    Accepted: May. 19, 2025

    Published Online: Aug. 18, 2025

    The Author Email: Hu Wang (wanghu@siom.ac.cn), Yuchuan Shao (shaoyuchuan@siom.ac.cn)

    DOI:10.3788/AOS250945

    CSTR:32393.14.AOS250945

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology