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Issue 33, 2018
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In situ synthesis and macroscale alignment of CsPbBr3 perovskite nanorods in a polymer matrix

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Abstract

We report an in situ catalyst-free strategy to synthesize inorganic CsPbBr3 perovskite nanorods in a polymer matrix (NRs-PM) with good dimensional control, outstanding optical properties and ultrahigh environmental stability. Polarization photoluminescence (PL) imaging with high spatial resolution was carried out for the first time on single nanorod (NR) and shows a relatively high local polarization ratio (∼0.4) consistent with theoretical predictions based on a dielectric contrast model. We further demonstrate that macroscale alignment of the CsPbBr3 nanorods can be achieved through mechanically stretching the NRs-PM films at elevated temperature, without deteriorating the optical quality of the NRs. A polarization ratio of 0.23 is observed for these aligned NRs-PM films, suggesting their potential as polarized down-converters to increase the light efficiency in liquid crystal display (LCD) backlights.

Graphical abstract: In situ synthesis and macroscale alignment of CsPbBr3 perovskite nanorods in a polymer matrix

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Supplementary files

Article information


Submitted
16 Jun 2018
Accepted
25 Jul 2018
First published
25 Jul 2018

Nanoscale, 2018,10, 15436-15441
Article type
Communication
Author version available

In situ synthesis and macroscale alignment of CsPbBr3 perovskite nanorods in a polymer matrix

J. He, A. Towers, Y. Wang, P. Yuan, Z. Jiang, J. Chen, A. J. Gesquiere, S. Wu and Y. Dong, Nanoscale, 2018, 10, 15436
DOI: 10.1039/C8NR04895A

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