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Research Article

All-inorganic dual-phase halide perovskite nanorings

Yapeng Zheng1,2Tao Yang1Zhi Fang1,2Minghui Shang2Zuotai Zhang3Jack Yang4,5Jiaxin Fan4Weiyou Yang2( )Xinmei Hou1( )Tom Wu4( )
Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China
Institute of Materials, Ningbo University of Technology, Ningbo 315211, China
School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen 518055, China
School of Material Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia
Australian Nuclear Science and Technology Organization, New Illawarra Road, NSW 2234, Australia
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Abstract

In the present work, we report the growth of all-inorganic perovskite nanorings with dual compositional phases of CsPbBr3 and CsPb2Br5 via a facile hot injection process. The self-coiling of CsPbBr3-CsPb2Br5 nanorings is driven by the axial stress generated on the outside surface of the as-synthesized nanobelts, which results from the lattice mismatch during the transformation of CsPbBr3 to CsPb2Br5. The tailored growth of nanorings could be achieved by adjusting the key experimental parameters such as reaction temperature, reaction time and stirring speed during the cooling process. The photoluminescence intensity and quantum yield of nanorings are higher than those of CsPbBr3 nanobelts, accompanied by a narrower full width at half maximum (FWHM), suggesting their high potential for constructing self-assembled optoelectronic nanodevices.

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Nano Research
Pages 2994-3000
Cite this article:
Zheng Y, Yang T, Fang Z, et al. All-inorganic dual-phase halide perovskite nanorings. Nano Research, 2020, 13(11): 2994-3000. https://doi.org/10.1007/s12274-020-2963-x
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Received: 09 March 2020
Revised: 30 June 2020
Accepted: 30 June 2020
Published: 20 July 2020
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020
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