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High spectral resolution of gamma-rays at room temperature by perovskite CsPbBr3 single crystals

Author

Listed:
  • Yihui He

    (Northwestern University)

  • Liviu Matei

    (Fisk University)

  • Hee Joon Jung

    (Northwestern University)

  • Kyle M. McCall

    (Northwestern University
    Northwestern University)

  • Michelle Chen

    (Northwestern University)

  • Constantinos C. Stoumpos

    (Northwestern University)

  • Zhifu Liu

    (Northwestern University)

  • John A. Peters

    (Northwestern University
    Chicago State University)

  • Duck Young Chung

    (Argonne National Laboratory)

  • Bruce W. Wessels

    (Northwestern University)

  • Michael R. Wasielewski

    (Northwestern University)

  • Vinayak P. Dravid

    (Northwestern University)

  • Arnold Burger

    (Fisk University)

  • Mercouri G. Kanatzidis

    (Northwestern University)

Abstract

Gamma-ray detection and spectroscopy is the quantitative determination of their energy spectra, and is of critical value and critically important in diverse technological and scientific fields. Here we report an improved melt growth method for cesium lead bromide and a special detector design with asymmetrical metal electrode configuration that leads to a high performance at room temperature. As-grown centimeter-sized crystals possess extremely low impurity levels (below 10 p.p.m. for total 69 elements) and detectors achieve 3.9% energy resolution for 122 keV 57Co gamma-ray and 3.8% for 662 keV 137Cs gamma-ray. Cesium lead bromide is unique among all gamma-ray detection materials in that its hole transport properties are responsible for the high performance. The superior mobility-lifetime product for holes (1.34 × 10−3 cm2 V−1) derives mainly from the record long hole carrier lifetime (over 25 μs). The easily scalable crystal growth and high-energy resolution, highlight cesium lead bromide as an exceptional next generation material for room temperature radiation detection.

Suggested Citation

  • Yihui He & Liviu Matei & Hee Joon Jung & Kyle M. McCall & Michelle Chen & Constantinos C. Stoumpos & Zhifu Liu & John A. Peters & Duck Young Chung & Bruce W. Wessels & Michael R. Wasielewski & Vinayak, 2018. "High spectral resolution of gamma-rays at room temperature by perovskite CsPbBr3 single crystals," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04073-3
    DOI: 10.1038/s41467-018-04073-3
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    Cited by:

    1. Jincong Pang & Haodi Wu & Hao Li & Tong Jin & Jiang Tang & Guangda Niu, 2024. "Reconfigurable perovskite X-ray detector for intelligent imaging," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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