Hybrid perovskite X-ray detectors with enhanced radioluminescence via thermally activated delayed fluorescence
Source abstract
Abstract
金属卤化物钙钛矿材料具有极高的射线衰减系数和优良的光电 性能, 基于其制备的光电探测器和闪烁体已成功用于X射线和γ-射线探 测. 然而, 充分吸收高能射线需要相对较厚的光吸收层, 但所需的厚度 对于溶液法制备的钙钛矿薄膜来说很难达到. 在这项工作中, 我们设计 了一种复合型器件, 其不需要厚的钙钛矿吸收层, 而是利用高荧光效率 的钙钛矿闪烁体和性能优良的钙钛矿薄膜光电探测器充分吸收和利用 X射线, 从而提高X射线探测性能. 而考虑到钙钛矿闪烁体严重的自吸 收, 我们将CsPbBr3与含Cu(I)的热激活延迟荧光配合物(MAC*)Cu(Cz) 混合, 有效地实现了下转换发光, 最大限度地提高了辐射发光量子效率. 与商业闪烁体相比, 混合闪烁体还实现了更短的余辉. 此外, 我们系统 地研究对比了CsPbIBr2探测器以及复合型探测器的性能指标, 发现复 合型探测器对X射线的探测灵敏度有显著提高, 并且能够实现在X射线 下清晰的成像. 这项工作为提高X射线探测性能提供了一种新的思路, 在应用层面具有巨大的潜力.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Perovskite Materials and Applications · Radiation Detection and Scintillator Technologies · Luminescence Properties of Advanced Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Szeles C. CdZnTe and CdTe materials for X-ray and gamma ray radiation detector applications. Phys Status Solidi B, 2004, 241: 783–79010.1002/pssb.200304296 ↗
2. Kim YC, Kim KH, Son DY, et al. Printable organometallic perovskite enables large-area, low-dose X-ray imaging. Nature, 2017, 550: 87–9110.1038/nature24032 ↗
3. Mengesha W, Taulbee TD, Rooney BD, et al. Light yield non-proportionality of CsI(Tl), CsI(Na), and YAP. IEEE Trans Nucl Sci, 1998, 45: 456–46110.1109/23.682426 ↗
4. van Eijk CWE. Inorganic scintillators in medical imaging. Phys Med Biol, 2002, 47: R85–R10610.1088/0031-9155/47/8/201 ↗
5. Xu Y, Lin Q. Photodetectors based on solution-processable semiconductors: Recent advances and perspectives. Appl Phys Rev, 2020, 7: 01131510.1063/1.5144840 ↗
6. Turren-Cruz SH, Hagfeldt A, Saliba M. Methylammonium-free, high-performance, and stable perovskite solar cells on a planar architecture. Science, 2018, 362: 449–45310.1126/science.aat3583 ↗
7. Saliba M, Correa-Baena JP, Grätzel M, et al. Perovskite solar cells: From the atomic level to film quality and device performance. Angew Chem Int Ed, 2018, 57: 2554–256910.1002/anie.201703226 ↗
8. Li C, Guerrero A, Zhong Y, et al. Real-time observation of iodide ion migration in methylammonium lead halide perovskites. Small, 2017, 13: 170171110.1002/smll.201701711 ↗
9. Li C, Guerrero A, Huettner S, et al. Unravelling the role of vacancies in lead halide perovskite through electrical switching of photoluminescence. Nat Commun, 2018, 9: 511310.1038/s41467-018-07571-6 ↗
10. Chen Q, Wu J, Ou X, et al. All-inorganic perovskite nanocrystal scintillators. Nature, 2018, 561: 88–9310.1038/s41586-018-0451-1 ↗
11. Cao J, Guo Z, Zhu S, et al. Preparation of lead-free two-dimensional-layered (C8H17NH3)2SnBr4 perovskite scintillators and their application in X-ray imaging. ACS Appl Mater Interfaces, 2020, 12: 19797–1980410.1021/acsami.0c02116 ↗
12. Wei H, Huang J. Halide lead perovskites for ionizing radiation detection. Nat Commun, 2019, 10: 106610.1038/s41467-019-08981-w ↗
13. Mykhaylyk VB, Kraus H, Saliba M. Bright and fast scintillation of organolead perovskite MAPbBr3 at low temperatures. Mater Horiz, 2019, 6: 1740–174710.1039/C9MH00281B ↗
14. Li W, Li H, Song J, et al. Fine-control-valve of halide perovskite single crystal quality for high performance X-ray detection. Sci Bull, 2021, 66: 2199–220610.1016/j.scib.2021.06.016 ↗
15. Wang X, Shi H, Ma H, et al. Organic phosphors with bright triplet excitons for efficient X-ray-excited luminescence. Nat Photonics, 2021, 15: 187–19210.1038/s41566-020-00744-0 ↗
16. Shrestha S, Fischer R, Matt GJ, et al. High-performance direct conversion X-ray detectors based on sintered hybrid lead triiodide perovskite wafers. Nat Photon, 2017, 11: 436–44010.1038/nphoton.2017.94 ↗
17. Yakunin S, Sytnyk M, Kriegner D, et al. Detection of X-ray photons by solution-processed lead halide perovskites. Nat Photon, 2015, 9: 444–44910.1038/nphoton.2015.82 ↗
18. Daum M, Deumel S, Sytnyk M, et al. Self-healing Cs3Bi2Br3I6 perovskite wafers for X-ray detection. Adv Funct Mater, 2021, 31: 210271310.1002/adfm.202102713 ↗
19. Zhao J, Zhao L, Deng Y, et al. Perovskite-filled membranes for flexible and large-area direct-conversion X-ray detector arrays. Nat Photonics, 2020, 14: 612–61710.1038/s41566-020-0678-x ↗
20. Qian W, Xu X, Wang J, et al. An aerosol-liquid-solid process for the general synthesis of halide perovskite thick films for direct-conversion X-ray detectors. Matter, 2021, 4: 942–95410.1016/j.matt.2021.01.020 ↗
21. Moseley ODI, Doherty TAS, Parmee R, et al. Halide perovskites scintillators: Unique promise and current limitations. J Mater Chem C, 2021, 9: 11588–1160410.1039/D1TC01595H ↗
22. Zhu W, Ma W, Su Y, et al. Low-dose real-time X-ray imaging with nontoxic double perovskite scintillators. Light Sci Appl, 2020, 9: 11210.1038/s41377-020-00353-0 ↗
23. Heo JH, Shin DH, Park JK, et al. High-performance next-generation perovskite nanocrystal scintillator for nondestructive X-ray imaging. Adv Mater, 2018, 30: 180174310.1002/adma.201801743 ↗
24. Yang B, Yin L, Niu G, et al. Lead-free halide Rb2CuBr3 as sensitive X-ray scintillator. Adv Mater, 2019, 31: 190471110.1002/adma.201904711 ↗
25. Gandini M, Villa I, Beretta M, et al. Efficient, fast and reabsorption-free perovskite nanocrystal-based sensitized plastic scintillators. Nat Nanotechnol, 2020, 15: 462–46810.1038/s41565-020-0683-8 ↗
26. Ma W, Su Y, Zhang Q, et al. Thermally activated delayed fluorescence (TADF) organic molecules for efficient X-ray scintillation and imaging. Nat Mater, 2022, 21: 210–21610.1038/s41563-021-01132-x ↗
27. Cao F, Yu D, Ma W, et al. Shining emitter in a stable host: Design of halide perovskite scintillators for X-ray imaging from commercial concept. ACS Nano, 2020, 14: 5183–519310.1021/acsnano.9b06114 ↗
28. Ying A, Huang YH, Lu CH, et al. High-efficiency red electroluminescence based on a carbine-Cu(I)-acridine complex. ACS Appl Mater Interfaces, 2021, 13: 13478–1348610.1021/acsami.0c22109 ↗
29. Hamze R, Shi S, Kapper SC, et al. “Quick-silver” from a systematic study of highly luminescent, two-coordinate, d10 coinage metal complexes. J Am Chem Soc, 2019, 141: 8616–862610.1021/jacs.9b03657 ↗
30. Crothers TW, Milot RL, Patel JB, et al. Photon reabsorption masks intrinsic bimolecular charge-carrier recombination in CH3NH3PbI3 perovskite. Nano Lett, 2017, 17: 5782–578910.1021/acs.nanolett.7b02834 ↗
31. Wang M, Wang K, Gao Y, et al. Impact of photoluminescence reabsorption in metal-halide perovskite solar cells. Sol RRL, 2021, 5: 210002910.1002/solr.202100029 ↗