Halide perovskite semiconductors are poised to revitalize the field of ionizing radiation detection as they have done to solar photovoltaics. We show that all-inorganic perovskite CsPbBr3 devices resolve 137Cs 662-keV γ-rays with 1.4% energy resolution, as well as other X- and γ-rays with energies ranging from tens of keV to over 1 MeV in ambipolar sensing and unipolar hole-only sensing modes with crystal volumes of 6.65 mm3 and 297 mm3, respectively. Furthermore, we report the scale-up of CsPbBr3 ingots to up to 1.5 inches in diameter with an excellent hole mobility–lifetime product of 8 × 10-3 cm2 V-1 and a long hole lifetime of up to 296 μs. CsPbBr3 detectors demonstrate a wide temperature region from ~2 °C to ~70 °C for stable operation. Detectors protected with suitable encapsulants show a uniform response for over 18 months. Consequently, we identify perovskite CsPbBr3 semiconductor as an exceptional candidate for new-generation high-energy γ-ray detection.
@article{osti_1780705,
author = {He, Yihui and Petryk, Matthew and Liu, Zhifu and Chica, Daniel G. and Hadar, Ido and Leak, Charles and Ke, Weijun and Spanopoulos, Ioannis and Lin, Wenwen and Chung, Duck Young and others},
title = {CsPbBr3 perovskite detectors with 1.4% energy resolution for high-energy γ-rays},
annote = {Halide perovskite semiconductors are poised to revitalize the field of ionizing radiation detection as they have done to solar photovoltaics. We show that all-inorganic perovskite CsPbBr3 devices resolve 137Cs 662-keV γ-rays with 1.4% energy resolution, as well as other X- and γ-rays with energies ranging from tens of keV to over 1 MeV in ambipolar sensing and unipolar hole-only sensing modes with crystal volumes of 6.65 mm3 and 297 mm3, respectively. Furthermore, we report the scale-up of CsPbBr3 ingots to up to 1.5 inches in diameter with an excellent hole mobility–lifetime product of 8 × 10-3 cm2 V-1 and a long hole lifetime of up to 296 μs. CsPbBr3 detectors demonstrate a wide temperature region from ~2 °C to ~70 °C for stable operation. Detectors protected with suitable encapsulants show a uniform response for over 18 months. Consequently, we identify perovskite CsPbBr3 semiconductor as an exceptional candidate for new-generation high-energy γ-ray detection.},
doi = {10.1038/s41566-020-00727-1},
url = {https://www.osti.gov/biblio/1780705},
journal = {Nature Photonics},
issn = {ISSN 1749-4885},
number = {1},
volume = {15},
place = {United States},
publisher = {Nature Publishing Group},
year = {2020},
month = {12}}
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Journal Article
·
Wed Jan 09 23:00:00 EST 2019
· Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
·OSTI ID:1494552