Research Article

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2019, 12(5): 1049–1054

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https://doi.org/10.1007/s12274-019-2338-3

Stress-induced CsPbBr3 nanocrystallization on glass surface: Unexpected mechanoluminescence and applications

Xiaoqiang Xiang1,2, Hang Lin1 (*), Renfu Li1, Yao Cheng1, Qingming Huang3, Ju Xu1, Congyong Wang1, Xueyuan Chen1, and Yuansheng Wang1 (*)

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1 CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
2 College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
3 Instrumentation Analysis and Research Center, Fuzhou University, Fuzhou 350002, China

Keywords: perovskite nanocrystals, CsPbBr3, mechanoluminescence, glass ceramics, nanocrystallization
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  • Abstract
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In this work, we discovered an unexpected mechanoluminescence (ML) phenomena occurring when transforming amorphous into crystalline, due to the stress-induced precipitation of CsPbBr3 perovskite nanocrystals on glass surface. It is revealed that, unlike the conventional thermal-induced phase transformation mechanism, the breakage of bonding of glass network provides the energy for nucleation and growth, and the shear stress avoids the long-range migration of structural units for crystallization. Such unique ML phenomenon enables the visualization of dynamical force that is inaccessible by common strategy, and so, opens up some novel applications, such as the pressuresensitive “glassy pencil” to learn people’s writing habits, and the Pb2+-detection with good sensitivity and selectivity. These findings not only demonstrate an effective route for the preparation of perovskite materials in a green, time-saving, low cost, and scalable way, enrich the knowledge of glass crystallization mechanism, but also exploit a useful avenue to quantitatively visualize the dynamical force.
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Stress-induced CsPbBr3 nanocrystallization on glass surface: Unexpected mechanoluminescence and applications. Nano Res. 2019, 12(5): 1049–1054 https://doi.org/10.1007/s12274-019-2338-3

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