Issue 18, 2019

All-polymer methylammonium lead iodide perovskite microcavities

Abstract

Thanks to a high photoluminescence quantum yield, large charge carrier diffusion, and ease of processing from solution, perovskite materials are becoming increasingly interesting for flexible optoelectronic devices. However, their deposition requires wide range solvents that are incompatible with many other flexible and solution-processable materials, including polymers. Here, we show that methylammonium lead iodide (MAPbI3) films can be directly synthesized on all-polymer microcavities via simple addition of a perfluorinated layer which protects the polymer photonic structure from the perovskite processing solvents. The new processing provides microcavities with a quality factor Q = 155, that is in agreement with calculations and the largest value reported so far for fully solution processed perovskite microcavities. Furthermore, the obtained microcavity shows strong spectral and angular redistribution of the the MAPbI3 photoluminescence spectrum, which shows a 3.5 fold enhanced intensity with respect to the detuned reference. The opportunity to control and modify the emission of a MAPbI3 film via a simple spun-cast polymer structure is of great interest in advanced optoelectronic applications requiring high colour purity or emission directionality.

Graphical abstract: All-polymer methylammonium lead iodide perovskite microcavities

Supplementary files

Article information

Article type
Paper
Submitted
15 fev 2019
Accepted
05 apr 2019
First published
08 apr 2019

Nanoscale, 2019,11, 8978-8983

All-polymer methylammonium lead iodide perovskite microcavities

P. Lova, P. Giusto, F. Di Stasio, G. Manfredi, G. M. Paternò, D. Cortecchia, C. Soci and D. Comoretto, Nanoscale, 2019, 11, 8978 DOI: 10.1039/C9NR01422E

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