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Issue 22, 2020
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Ultralong CH3NH3PbI3 nanowires synthesized by a ligand-assisted reprecipitation strategy for high-performance photodetectors

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Abstract

Organic–inorganic hybrid perovskite nanowires with well-defined structures have attracted considerable attention for optoelectronic applications. Perovskite nanowires integrated into practical optoelectronic devices are often hindered by the poor crystalline quality. Herein, a ligand-assisted reprecipitation (LARP) strategy is employed to prepare ultralong and freestanding CH3NH3PbI3 nanowires on a large-scale. Oleylamine is adopted as an inhibitor, which can create a passivation layer on the surface of CH3NH3PbI3, to slow down the crystallization rate of CH3NH3PbI3 nanowires. With the low crystallization rate, several millimeters long and high-quality CH3NH3PbI3 nanowires with smooth surfaces can be synthesized on a large scale. Photodetectors fabricated on oleylamine assisted synthesized CH3NH3PbI3 nanowires exhibit high detectivity, which is five times higher than that of non-oleylamine assisted synthesized CH3NH3PbI3 nanowire photoanodes.

Graphical abstract: Ultralong CH3NH3PbI3 nanowires synthesized by a ligand-assisted reprecipitation strategy for high-performance photodetectors

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Supplementary files

Article information


Submitted
17 Feb 2020
Accepted
13 Apr 2020
First published
14 Apr 2020

J. Mater. Chem. C, 2020,8, 7378-7383
Article type
Paper

Ultralong CH3NH3PbI3 nanowires synthesized by a ligand-assisted reprecipitation strategy for high-performance photodetectors

X. He, C. Jian, W. Hong, Q. Cai and W. Liu, J. Mater. Chem. C, 2020, 8, 7378
DOI: 10.1039/D0TC00807A

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