Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskite
Cesium copper iodine perovskite is widely studied for applications in X-ray imaging and anti-counterfeiting fields based on its excellent photovoltaic properties. Uniquely, Cs3Cu2I5 undergoes a reversible phase transition to CsCu2I3 when induced by humidity, a phenomenon that is utilized in fluoresc...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Optical Materials: X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590147823000232 |
| _version_ | 1797737890974793728 |
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| author | Jing Yu Wei Zhou Dedan Mou Shuangpeng Yan Hongxing Li Xuhui Xu Qinping Qiang Bitao Liu |
| author_facet | Jing Yu Wei Zhou Dedan Mou Shuangpeng Yan Hongxing Li Xuhui Xu Qinping Qiang Bitao Liu |
| author_sort | Jing Yu |
| collection | DOAJ |
| description | Cesium copper iodine perovskite is widely studied for applications in X-ray imaging and anti-counterfeiting fields based on its excellent photovoltaic properties. Uniquely, Cs3Cu2I5 undergoes a reversible phase transition to CsCu2I3 when induced by humidity, a phenomenon that is utilized in fluorescent anti-counterfeiting application. However, there is no relevant proof for the phase transition of CsCu2I3 upon humidity, which leads to an incomplete explanation of the water-induced phase transition of Cs3Cu2I5. Here, we illustrate the water-induced phase transition events of Cs3Cu2I5 and CsCu2I3 crystals that were made utilizing a straightforward anti-solvent approach. Interestingly, Cs3Cu2I5 can undergo a reversible phase transition based on humidity exposure and removal, whereas CsCu2I3 undergoes immediate phase decomposition and fluorescence burst upon humidity exposure, and recrystallization to low-formation-energy Cs3Cu2I5 is accompanied by fluorescence recurrence after humidity evaporation. Furthermore, Cs3Cu2I5 and CsCu2I3 crystals exhibit a fascinating X-ray light yield and a high spatial resolution of 16.6 and 12.5 lp mm−1, respectively. As a result, this research adds to our understanding of the phase transition between Cs3Cu2I5 and CsCu2I3 and also provides new candidates for advanced fluorescence anti-counterfeiting techniques and X-ray imaging scintillators. |
| first_indexed | 2024-03-12T13:35:58Z |
| format | Article |
| id | doaj.art-01bca4e1ed414f4f945281557d987e32 |
| institution | Directory Open Access Journal |
| issn | 2590-1478 |
| language | English |
| last_indexed | 2024-03-12T13:35:58Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Optical Materials: X |
| spelling | doaj.art-01bca4e1ed414f4f945281557d987e322023-08-24T04:35:33ZengElsevierOptical Materials: X2590-14782023-07-0119100249Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskiteJing Yu0Wei Zhou1Dedan Mou2Shuangpeng Yan3Hongxing Li4Xuhui Xu5Qinping Qiang6Bitao Liu7College of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing, 402160, PR ChinaCollege of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing, 402160, PR ChinaCollege of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, PR ChinaCollege of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, PR ChinaCollege of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji, 721016, PR ChinaCollege of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, PR ChinaResearch Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing, 402160, PR China; Corresponding author.College of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, PR China; Research Institute for New Materials Technology, Chongqing University of Arts and Sciences, Chongqing, 402160, PR China; Corresponding author. College of Materials Science and Engineering, Key Laboratory of Advanced Materials of Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, PR China.Cesium copper iodine perovskite is widely studied for applications in X-ray imaging and anti-counterfeiting fields based on its excellent photovoltaic properties. Uniquely, Cs3Cu2I5 undergoes a reversible phase transition to CsCu2I3 when induced by humidity, a phenomenon that is utilized in fluorescent anti-counterfeiting application. However, there is no relevant proof for the phase transition of CsCu2I3 upon humidity, which leads to an incomplete explanation of the water-induced phase transition of Cs3Cu2I5. Here, we illustrate the water-induced phase transition events of Cs3Cu2I5 and CsCu2I3 crystals that were made utilizing a straightforward anti-solvent approach. Interestingly, Cs3Cu2I5 can undergo a reversible phase transition based on humidity exposure and removal, whereas CsCu2I3 undergoes immediate phase decomposition and fluorescence burst upon humidity exposure, and recrystallization to low-formation-energy Cs3Cu2I5 is accompanied by fluorescence recurrence after humidity evaporation. Furthermore, Cs3Cu2I5 and CsCu2I3 crystals exhibit a fascinating X-ray light yield and a high spatial resolution of 16.6 and 12.5 lp mm−1, respectively. As a result, this research adds to our understanding of the phase transition between Cs3Cu2I5 and CsCu2I3 and also provides new candidates for advanced fluorescence anti-counterfeiting techniques and X-ray imaging scintillators.http://www.sciencedirect.com/science/article/pii/S2590147823000232Phase transitionsCs3Cu2I5CsCu2I3Anti-counterfeitingX-ray imaging |
| spellingShingle | Jing Yu Wei Zhou Dedan Mou Shuangpeng Yan Hongxing Li Xuhui Xu Qinping Qiang Bitao Liu Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskite Optical Materials: X Phase transitions Cs3Cu2I5 CsCu2I3 Anti-counterfeiting X-ray imaging |
| title | Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskite |
| title_full | Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskite |
| title_fullStr | Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskite |
| title_full_unstemmed | Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskite |
| title_short | Multi-level anti-counterfeiting and X-ray imaging based on luminescence of Cs–Cu–I perovskite |
| title_sort | multi level anti counterfeiting and x ray imaging based on luminescence of cs cu i perovskite |
| topic | Phase transitions Cs3Cu2I5 CsCu2I3 Anti-counterfeiting X-ray imaging |
| url | http://www.sciencedirect.com/science/article/pii/S2590147823000232 |
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