Perovskite CsPbBr3 Single-Crystal Detector Operating at 1010 Photons s-1 mm-2 for Ultra-High Flux X-ray Detection
Journal Article
·
· Advanced Optical Materials
- Northwestern Univ., Evanston, IL (United States)
- Northwestern Univ., Evanston, IL (United States); Argonne National Lab. (ANL), Lemont, IL (United States). Materials Science Division
- Argonne National Lab. (ANL), Lemont, IL (United States). X‐ray Science Division
- Argonne National Lab. (ANL), Lemont, IL (United States). Materials Science Division
Semiconductors for detecting hard radiation are confronted with considerable problems when operating at high photon fluxes. A perovskite CsPbBr3 single-crystal detector capable of operating at X-ray fluxes of up to 1010 photons s-1 mm-2 with beam area ≤ 0.25 mm2 at 58.61 keV for current-mode X-ray detection is reported. The spectrometer-grade melt-grown CsPbBr3 detectors show a gamma-ray energy resolution of ~7.5% at 122 keV for 57Co and dark current as low as 4.3 nA (0.5 nA mm-2) at a reverse bias voltage of 200 V (118 V mm-1). The detector is tested at X-ray energies of 8.2, 10, and 58.61 keV at a synchrotron light source under a reverse bias voltage of up to 1000 V (588 V mm-1). Under a sufficiently high bias voltage and within several hundreds of seconds X-ray exposure, good photocurrent linearity (goodness of fit R2 > 0.99) and reproducibility are obtained up to a flux of ≈1010 photons s-1 mm-2 at beam area 0.25 mm2 with Lower Limit of Detection of ≈105 photons s-1 mm-2 and Charge Collection Efficiency of ≈100% for 58.61 keV X-rays. Therefore, wide application of CsPbBr3 detectors in high-flux X-ray detection is anticipated.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Defense Threat Reduction Agency (DTRA); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1969744
- Alternate ID(s):
- OSTI ID: 1922579
- Journal Information:
- Advanced Optical Materials, Journal Name: Advanced Optical Materials Journal Issue: 7 Vol. 11; ISSN 2195-1071
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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