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In situ localized formation of cesium lead bromide nanocomposites for fluorescence micro-patterning technology achieved by organic solvent polymerization

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Abstract

Herein, a novel and facile strategy for luminescent patterning of inorganic perovskites is proposed by using 532 nm femtosecond laser pulses. In a one step process in situ synthesis and arbitrary patterning of cesium lead bromide/polymer nanocomposites on glass substrates under laser irradiation is achieved, which is ascribed to organic solvent polymerization. The power threshold for machining nanocomposites can be reduced significantly by using heat-conducting substrates, providing the possibility for Cs-based halide perovskites to be integrated onto flexible substrates. Moreover, the resulting nanocomposites exhibit bright fluorescence with a narrow spectral width of 20 nm due to the uniform size distribution, comparable to the perovskite nanocrystals prepared by the conventional liquid-phase method. Repeatable and continuous laser-processed lines with 1.2 μm minimum line width are developed successfully. These findings suggest that this patterning strategy has potential application prospects in miniature anti-counterfeiting patterns and high-resolution display technology.

Graphical abstract: In situ localized formation of cesium lead bromide nanocomposites for fluorescence micro-patterning technology achieved by organic solvent polymerization

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Article information


Submitted
06 Dec 2019
Accepted
20 Jan 2020
First published
07 Feb 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

In situ localized formation of cesium lead bromide nanocomposites for fluorescence micro-patterning technology achieved by organic solvent polymerization

L. Zhang, Y. Liu, Z. Gan, J. Su and Y. Gao, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/C9TC06687J

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