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Growth mechanism of CsPbBr3 perovskite nanocrystals by a co-precipitation method in a CSTR system

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Abstract

A co-precipitation method based on supersaturated recrystallization in a continuous stirred-tank reactor (CSTR) system was applied to uncover the growth mechanism of CsPbBr3 perovskite nanocrystals (NCs). The reaction rate can be controlled by changing the reaction conditions in this CSTR system, which helps us to observe important intermediate stages to gain insight into the growth mechanism of these NCs. The effects of the temperature, concentrations of the ligands (oleylamine and oleic acid), and precursor concentrations during the growth process of CsPbBr3 NCs were discussed in detail. Further, the growth mechanism of CsPbBr3 NCs was investigated in terms of the dynamics and thermodynamics on the basis of experimental results. The growth mechanism is a useful guide to large-scale synthesis. The synthesized CsPbBr3 NCs were employed for fabrication of both white light-emitting diodes and quantum-dot light-emitting diodes to test their photoelectric properties; the results show that CsPbBr3 NCs show great promise for optoelectronics applications.

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Acknowledgements

The authors thank the National Natural Science Foundation of China (Nos. 21574049 and 61564003). The authors also thank the Analytical and Testing Center of Huazhong University of Science and Technology (HUST).

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Authors and Affiliations

  1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China

    Jibin Zhang, Lianwei Fan, Junli Li, Xiangfu Liu, Rongwen Wang, Lei Wang & Guoli Tu

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  1. Jibin Zhang
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  2. Lianwei Fan
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  3. Junli Li
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  4. Xiangfu Liu
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  5. Rongwen Wang
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  7. Guoli Tu
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Correspondence to Guoli Tu.

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Zhang, J., Fan, L., Li, J. et al. Growth mechanism of CsPbBr3 perovskite nanocrystals by a co-precipitation method in a CSTR system. Nano Res. 12, 121–127 (2019). https://doi.org/10.1007/s12274-018-2190-x

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  • DOI: https://doi.org/10.1007/s12274-018-2190-x

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