Defect repairing in lead bromide perovskite single crystals with biasing and bromine for X-ray photon-counting detectors
Source abstract
Abstract
The benign defect nature of iodide perovskites has gained strong momentum in understanding and application in perovskite devices; however, the understanding of defects in bromide perovskites remains elusive. Here we demonstrate that the biasing of lead bromide perovskite crystals, which has been broadly deemed as detrimental to device performance, can efficiently repair bulk point defects in them. The biasing results in a significant bromide-vacancy reduction, starting from the cathode side and progressing to the anode side across the whole crystal. The vacancies can diffuse back after several weeks of storage. By introducing bromine in crystal growth, we permanently reduce the bromide-vacancy concentration by ~1,000 times, enhancing charge transport and stability in formamidinium lead bromide crystals. The optimized formamidinium lead bromide detector exhibited a very high detection performance including an energy resolution of 0.7% under 137Cs 662-keV γ-rays measured under room-temperature, high-performance iodine K-edge X-ray detection at low agent concentrations and dramatically improved radiation hardness.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Perovskite Materials and Applications · Electronic and Structural Properties of Oxides · Advanced Semiconductor Detectors and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (52)
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1. Chouhan, L., Ghimire, S., Subrahmanyam, C., Miyasaka, T. & Biju, V. Synthesis, optoelectronic properties and applications of halide perovskites. Chem. Soc. Rev. 49, 2869–2885 (2020).10.1039/C9CS00848A ↗
2. Manser, J. S., Christians, J. A. & Kamat, P. V. Intriguing optoelectronic properties of metal halide perovskites. Chem. Rev. 116, 12956–13008 (2016).10.1021/acs.chemrev.6b00136 ↗
3. Wang, H. & Kim, D. H. Perovskite-based photodetectors: materials and devices. Chem. Soc. Rev. 46, 5204–5236 (2017).10.1039/C6CS00896H ↗
4. He, Y., Hadar, I. & Kanatzidis, M. G. Detecting ionizing radiation using halide perovskite semiconductors processed through solution and alternative methods. Nat. Photon. 16, 14–26 (2022).10.1038/s41566-021-00909-5 ↗
5. Wei, H. & Huang, J. Halide lead perovskites for ionizing radiation detection. Nat. Commun. 10, 1066 (2019).10.1038/s41467-019-08981-w ↗
6. He, X. et al. Recent development of halide perovskite materials and devices for ionizing radiation detection. Chem. Rev. 123, 1207–1261 (2023).10.1021/acs.chemrev.2c00404 ↗
7. Shi, D. et al. Low trap-state density and long carrier diffusion in organolead trihalide perovskite single crystals. Science 347, 519–522 (2015).10.1126/science.aaa2725 ↗
8. Dong, Q. et al. Electron-hole diffusion lengths >175 μm in solution-grown CH3NH3PbI3 single crystals. Science 347, 967–970 (2015).10.1126/science.aaa5760 ↗
9. Ni, Z. et al. Resolving spatial and energetic distributions of trap states in metal halide perovskite solar cells. Science 367, 1352–1358 (2020).10.1126/science.aba0893 ↗
10. Yakunin, S. et al. Detection of gamma photons using solution-grown single crystals of hybrid lead halide perovskites. Nat. Photon. 10, 585–589 (2016).10.1038/nphoton.2016.139 ↗
11. Wei, H. et al. Dopant compensation in alloyed CH3NH3PbBr3−xClx perovskite single crystals for gamma-ray spectroscopy. Nat. Mater. 16, 826–833 (2017).10.1038/nmat4927 ↗
12. He, Y. et al. High spectral resolution of gamma-rays at room temperature by perovskite CsPbBr3 single crystals. Nat. Commun. 9, 1609 (2018).10.1038/s41467-018-04073-3 ↗
13. He, Y. et al. CsPbBr3 perovskite detectors with 1.4% energy resolution for high-energy γ-rays. Nat. Photon. 15, 36–42 (2021).10.1038/s41566-020-00727-1 ↗
14. Zhao, L. et al. High-yield growth of FACsPbBr3 single crystals with low defect density from mixed solvents for gamma-ray spectroscopy. Nat. Photon. 17, 315–323 (2023).
15. Zhao, L. et al. Surface-defect-passivation-enabled near-unity charge collection efficiency in bromide-based perovskite gamma-ray spectrum devices. Nat. Photon. 18, 250–257 (2024).10.1038/s41566-023-01356-0 ↗
16. Alam, M. D., Nasim, S. S. & Hasan, S. Recent progress in CdZnTe based room temperature detectors for nuclear radiation monitoring. Prog. Nucl. Energy 140, 103918 (2021).10.1016/j.pnucene.2021.103918 ↗
17. Chen, H. et al. Development of large-volume high-performance monolithic CZT radiation detector. In Proc. Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XX Vol. 10762 107620N (SPIE, 2018).10.1117/12.2321244 ↗
18. Chen, B., Rudd, P. N., Yang, S., Yuan, Y. & Huang, J. Imperfections and their passivation in halide perovskite solar cells. Chem. Soc. Rev. 48, 3842–3867 (2019).10.1039/C8CS00853A ↗
19. Huang, J., Yuan, Y., Shao, Y. & Yan, Y. Understanding the physical properties of hybrid perovskites for photovoltaic applications. Nat. Rev. Mater. 2, 17042 (2017).10.1038/natrevmats.2017.42 ↗
20. Liu, Y., Yang, Z. & Liu, S. (Frank) Recent progress in single‐crystalline perovskite research including crystal preparation, property evaluation, and applications. Adv. Sci. 5, 1700471 (2018).10.1002/advs.201700471 ↗
21. Ni, Z. et al. Identification and suppression of point defects in bromide perovskite single crystals enabling gamma‐ray spectroscopy. Adv. Mater. 36, 2406193 (2024).10.1002/adma.202406193 ↗
22. Hua, Y. et al. Suppressed ion migration for high-performance X-ray detectors based on atmosphere-controlled EFG-grown perovskite CsPbBr3 single crystals. Nat. Photon. 18, 870–877 (2024).10.1038/s41566-024-01480-5 ↗
23. Bennett, S. H. et al. Charge transport comparison of FA, MA and Cs lead halide perovskite single crystals for radiation detection. Front. Detect. Sci. Technol. 1, 1249892 (2023).10.3389/fdest.2023.1249892 ↗
24. Jiang, J. et al. Synergistic strain engineering of perovskite single crystals for highly stable and sensitive X-ray detectors with low-bias imaging and monitoring. Nat. Photon. 16, 575–581 (2022).10.1038/s41566-022-01024-9 ↗
25. Pan, L. et al. Ultra-high flux X-ray detection by solution-grown perovskite CsPbBr3 single crystal semiconductor detector. Adv. Mater. 35, 2211840 (2023).10.1002/adma.202211840 ↗
26. Pan, L. et al. Study of perovskite CsPbBr3 detector polarization and its mitigation with ultrahigh X-ray flux. J. Appl. Phys. 133, 194502 (2023).10.1063/5.0151902 ↗
27. Yao, M. et al. High-temperature stable FAPbBr3 single crystals for sensitive X-ray and visible light detection toward space. Nano Lett. 21, 3947–3955 (2021).10.1021/acs.nanolett.1c00700 ↗
28. Liu, X. et al. Improved crystallization quality of FAPbBr3 single crystals by a seeded solution method. ACS Appl. Mater. Interfaces 14, 51130–51136 (2022).10.1021/acsami.2c15343 ↗
29. Liu, X. et al. Solution-grown formamidinium hybrid perovskite (FAPbBr3) single crystals for α-particle and γ-ray detection at room temperature. ACS Appl. Mater. Interfaces 13, 15383–15390 (2021).10.1021/acsami.1c00174 ↗
30. Lin, C. et al. Electrode engineering in halide perovskite electronics: plenty of room at the interfaces. Adv. Mater. 34, 2108616 (2022).10.1002/adma.202108616 ↗
31. Yu, Y., Hoang, M. T., Yang, Y. & Wang, H. Critical assessment of carbon pastes for carbon electrode-based perovskite solar cells. Carbon 205, 270–293 (2023).10.1016/j.carbon.2023.01.046 ↗
32. He, Y. et al. Resolving the energy of γ-ray photons with MAPbI3 single crystals. ACS Photonics 5, 4132–4138 (2018).10.1021/acsphotonics.8b00873 ↗
33. Barrett, H. H., Eskin, J. D. & Barber, H. B. Charge transport in arrays of semiconductor gamma-ray detectors. Phys. Rev. Lett. 75, 156–159 (1995).10.1103/PhysRevLett.75.156 ↗
34. Motti, S. G. et al. Defect activity in lead halide perovskites. Adv. Mater. 31, 1901183 (2019).10.1002/adma.201901183 ↗
35. Yin, W.-J., Shi, T. & Yan, Y. Unusual defect physics in CH3NH3PbI3 perovskite solar cell absorber. Appl. Phys. Lett. 104, 063903 (2014).10.1063/1.4864778 ↗
36. Xiong, W. et al. Controllable p- and n-type behaviours in emissive perovskite semiconductors. Nature 633, 344–350 (2024).10.1038/s41586-024-07792-4 ↗
37. Elcock, E. W. Vacancy diffusion in ordered alloys. Proc. Phys. Soc. 73, 250–264 (1959).10.1088/0370-1328/73/2/314 ↗
38. Ji, Q., Bi, L., Zhang, J., Cao, H. & Zhao, X. S. The role of oxygen vacancies of ABO3 perovskite oxides in the oxygen reduction reaction. Energy Environ. Sci. 13, 1408–1428 (2020).10.1039/D0EE00092B ↗
39. Chen, D., Chen, C., Baiyee, Z. M., Shao, Z. & Ciucci, F. Nonstoichiometric oxides as low-cost and highly-efficient oxygen reduction/evolution catalysts for low-temperature electrochemical devices. Chem. Rev. 115, 9869–9921 (2015).10.1021/acs.chemrev.5b00073 ↗
40. Drouilly, C. et al. ZnO oxygen vacancies formation and filling followed by in situ photoluminescence and in situ EPR. J. Phys. Chem. C 116, 21297–21307 (2012).10.1021/jp307693y ↗
41. Thomlinson, W., Elleaume, H., Porra, L. & Suortti, P. K-edge subtraction synchrotron X-ray imaging in bio-medical research. Phys. Med. 49, 58–76 (2018).10.1016/j.ejmp.2018.04.389 ↗
42. Chandarana, H. et al. Iodine quantification with dual-energy CT: phantom study and preliminary experience with renal masses. Am. J. Roentgenol. 196, W693–W700 (2011).10.2214/AJR.10.5541 ↗
43. Faggioni, L. & Gabelloni, M. Iodine concentration and optimization in computed tomography angiography: current issues. Invest. Radiol. 51, 816–822 (2016).10.1097/RLI.0000000000000283 ↗
44. Muenzel, D. et al. Spectral photon-counting CT: initial experience with dual–contrast agent K-edge colonography. Radiology 283, 723–728 (2017).10.1148/radiol.2016160890 ↗
45. Taguchi, K. & Iwanczyk, J. S. Vision 20/20: single photon counting X‐ray detectors in medical imaging. Med. Phys. 40, 100901 (2013).10.1118/1.4820371 ↗
46. Jones, L. T. & Woollam, P. B. Resolution improvement in CdTe gamma detectors using pulse-shape discrimination. Nucl. Instrum. Methods 124, 591–595 (1975).10.1016/0029-554X(75)90615-1 ↗
47. Hazlett, T. et al. Large, high resolution CdTe gamma ray sensors. IEEE Trans. Nucl. Sci. 33, 332–335 (1986).10.1109/TNS.1986.4337112 ↗
48. Luke, P. N., Amman, M., Lee, J. S., Ludewigt, B. A. & Yaver, H. A CdZnTe coplanar-grid detector array for environmental remediation. Nucl. Instrum. Methods Phys. Res. A 458, 319–324 (2001).10.1016/S0168-9002(00)00876-7 ↗
49. Zhu, Y. & He, Z. Performance of a 2-keV digitizer ASIC for 3-D position-sensitive pixellated semiconductor detectors. In Proc. IEEE Nuclear Science Symposium and Medical Imaging Conference Record 4109–4112 (IEEE, 2012).10.1109/NSSMIC.2012.6551939 ↗
50. Prokesch, M., Soldner, S. A. & Sundaram, A. G. CdZnTe detectors for gamma spectroscopy and X-ray photon counting at 250 × 106 photons/(mm2 s). J. Appl. Phys. 124, 044503 (2018).10.1063/1.5041006 ↗
51. Richter, M. & Siffert, P. High resolution gamma ray spectroscopy with CdTe detector systems. Nucl. Instrum. Methods Phys. Res. A 322, 529–537 (1992).10.1016/0168-9002(92)91227-Z ↗
52. Pan, L., Feng, Y., Huang, J. & Cao, L. R. Comparison of Zr, Bi, Ti, and Ga as metal contacts in inorganic perovskite CsPbBr3 gamma-ray detector. IEEE Trans. Nucl. Sci. 67, 2255–2262 (2020).10.1109/TNS.2020.3018101 ↗