Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications
As a direct band gap semiconductor, perovskite has the advantages of high carrier mobility, long charge diffusion distance, high defect tolerance and low-cost solution preparation technology. Compared with traditional metal halide perovskites, which regulate energy band and luminescence by changing...
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MDPI AG
2024-04-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/7/1607 |
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| author | Hang Li Jiazhen He Xiaoqian Wang Qi Liu Xuemin Luo Mingwei Wang Jinfeng Liu Chengqi Liu Yong Liu |
| author_facet | Hang Li Jiazhen He Xiaoqian Wang Qi Liu Xuemin Luo Mingwei Wang Jinfeng Liu Chengqi Liu Yong Liu |
| author_sort | Hang Li |
| collection | DOAJ |
| description | As a direct band gap semiconductor, perovskite has the advantages of high carrier mobility, long charge diffusion distance, high defect tolerance and low-cost solution preparation technology. Compared with traditional metal halide perovskites, which regulate energy band and luminescence by changing halogen, perovskite quantum dots (QDs) have a surface effect and quantum confinement effect. Based on the LaMer nucleation growth theory, we have synthesized CsPbBr<sub>3</sub> QDs with high dimensional homogeneity by creating an environment rich in Br<sup>−</sup> ions based on the general thermal injection method. Moreover, the size of the quantum dots can be adjusted by simply changing the reaction temperature and the concentration of Br<sup>−</sup> ions in the system, and the blue emission of strongly confined pure CsPbBr<sub>3</sub> perovskite is realized. Finally, optical and electrochemical tests suggested that the synthesized quantum dots have the potential to be used in the field of photocatalysis. |
| first_indexed | 2024-04-24T10:40:26Z |
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| id | doaj.art-b6a688b3d80144e0a870926e4877a5c7 |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-24T10:40:26Z |
| publishDate | 2024-04-01 |
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| spelling | doaj.art-b6a688b3d80144e0a870926e4877a5c72024-04-12T13:22:07ZengMDPI AGMaterials1996-19442024-04-01177160710.3390/ma17071607Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis ApplicationsHang Li0Jiazhen He1Xiaoqian Wang2Qi Liu3Xuemin Luo4Mingwei Wang5Jinfeng Liu6Chengqi Liu7Yong Liu8International School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaInternational School of Materials Science and Engineering (ISMSE), State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaAs a direct band gap semiconductor, perovskite has the advantages of high carrier mobility, long charge diffusion distance, high defect tolerance and low-cost solution preparation technology. Compared with traditional metal halide perovskites, which regulate energy band and luminescence by changing halogen, perovskite quantum dots (QDs) have a surface effect and quantum confinement effect. Based on the LaMer nucleation growth theory, we have synthesized CsPbBr<sub>3</sub> QDs with high dimensional homogeneity by creating an environment rich in Br<sup>−</sup> ions based on the general thermal injection method. Moreover, the size of the quantum dots can be adjusted by simply changing the reaction temperature and the concentration of Br<sup>−</sup> ions in the system, and the blue emission of strongly confined pure CsPbBr<sub>3</sub> perovskite is realized. Finally, optical and electrochemical tests suggested that the synthesized quantum dots have the potential to be used in the field of photocatalysis.https://www.mdpi.com/1996-1944/17/7/1607CsPbBr<sub>3</sub> QDsquantum confinement effectblue emissionsize-adjustable |
| spellingShingle | Hang Li Jiazhen He Xiaoqian Wang Qi Liu Xuemin Luo Mingwei Wang Jinfeng Liu Chengqi Liu Yong Liu Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications Materials CsPbBr<sub>3</sub> QDs quantum confinement effect blue emission size-adjustable |
| title | Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications |
| title_full | Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications |
| title_fullStr | Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications |
| title_full_unstemmed | Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications |
| title_short | Synthesis of Size-Adjustable CsPbBr<sub>3</sub> Perovskite Quantum Dots for Potential Photoelectric Catalysis Applications |
| title_sort | synthesis of size adjustable cspbbr sub 3 sub perovskite quantum dots for potential photoelectric catalysis applications |
| topic | CsPbBr<sub>3</sub> QDs quantum confinement effect blue emission size-adjustable |
| url | https://www.mdpi.com/1996-1944/17/7/1607 |
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