Journal of Synthetic Crystals, Volume. 54, Issue 7, 1146(2025)
Research Progress on Defects in CsPbBr3 Crystals for Radiation Detectors
Fig. 2. Intrinsic point defect energy levels calculated by HSE+SOC[69]
Fig. 5. Calculated energy profile diagram of the ionic migration path and their migration paths for Cs⁺ and Br⁻[72]
Fig. 6. Two twin structures in CsPbBr3 crystals[74]. (a) Schematic diagrams of the (121) reflection twin, illustrating the unit cell correspondence and interface matching relationship; (b) schematic diagrams of the 90° rotation twin along the [101] direction, illustrating the unit cell correspondence and interface matching relationship
Fig. 7. Schematic illustration of crystal structures during the structural phase transition in CsPbBr3
Fig. 8. (a) In situ optical microscopy images of CsPbBr3 single-crystal thin film before and after phase transition; (b), (c) external quantum efficiency, and specific detectivity performance[76]
Fig. 9. Inclusion phases in melt-grown CsPbBr3 crystals[52]. SEM images taken on the solid-liquid interface of QC-1 (a), QC-2 (b), and QC-3 (c), showing the interfaces were gradually flattened, and high magnification SEM images taken on the polycrystalline regions of QC-1 (d), QC-2 (e), and QC-3 (f), respectively, the red lines outline the secondary phases[52]
Fig. 10. Inclusion phases in solution-grown CsPbBr3 crystals[78]. (a)~(c) Typical SEM images of well-defined SP defects with regular polyhedral morphologies; (d)~(f) ideal crystal model of SP defects bounded by low index matrix facets (100) and (110) based on the observed actual morphology; (g) morphological evolution schematic of the SP defects
Fig. 11. (a), (b) SP particles distribution and size histogram in etched CPB-1; (c), (d) SP particles in etched CPB-2, (e) I-t curves for CPB-1 and CPB-2 at 1 V; (f) schematic diagram of carrier transport in CsPbBr3 matrix and SP particles under 241Am @5.48 MeV α particles irradiation; (g), (h) carrier mobility by linear fitting for CPB-1 and CPB-2; (i) α particles induced pulse shapes and the rise time (tr) under the same electric field strength (200 V·cm-1) for CPB-1 and CPB-2[77]
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Ning LI, Xinlei ZHANG, Bao XIAO, Binbin ZHANG. Research Progress on Defects in CsPbBr3 Crystals for Radiation Detectors[J]. Journal of Synthetic Crystals, 2025, 54(7): 1146
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Received: Mar. 21, 2025
Accepted: --
Published Online: Aug. 28, 2025
The Author Email: Bao XIAO (fsnhxiaobao@163.com), Binbin ZHANG (zbb@nwpu.edu.cn)