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Highly Efficient and Environmentally Stable Flexible Color Converters Based on Confined CH3NH3PbBr3 Nanocrystals

  • Andrea Rubino
    Andrea Rubino
    Institute of Materials Science of Seville, Spanish National Research Council-University of Seville, C/Américo Vespucio 49, 41092 Seville, Spain
  • Miguel Anaya
    Miguel Anaya
    Institute of Materials Science of Seville, Spanish National Research Council-University of Seville, C/Américo Vespucio 49, 41092 Seville, Spain
    More by Miguel Anaya
  • Juan F. Galisteo-López
    Juan F. Galisteo-López
    Institute of Materials Science of Seville, Spanish National Research Council-University of Seville, C/Américo Vespucio 49, 41092 Seville, Spain
  • T. Cristina Rojas
    T. Cristina Rojas
    Institute of Materials Science of Seville, Spanish National Research Council-University of Seville, C/Américo Vespucio 49, 41092 Seville, Spain
  • Mauricio E. Calvo*
    Mauricio E. Calvo
    Institute of Materials Science of Seville, Spanish National Research Council-University of Seville, C/Américo Vespucio 49, 41092 Seville, Spain
    *E-mail: [email protected] (M.E.C.).
  • , and 
  • Hernán Míguez*
    Hernán Míguez
    Institute of Materials Science of Seville, Spanish National Research Council-University of Seville, C/Américo Vespucio 49, 41092 Seville, Spain
    *E-mail: [email protected] (H.M.).
Cite this: ACS Appl. Mater. Interfaces 2018, 10, 44, 38334–38340
Publication Date (Web):October 12, 2018
https://doi.org/10.1021/acsami.8b11706
Copyright © 2018 American Chemical Society

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    Abstract

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    In this work, we demonstrate a synthetic route to attain methylammonium lead bromide (CH3NH3PbBr3) perovskite nanocrystals (nc-MAPbBr3, 1.5 nm < size < 3 nm) and provide them with functionality as highly efficient flexible, transparent, environmentally stable, and adaptable color-converting films. We use nanoparticle metal oxide (MOx) thin films as porous scaffolds of controlled nanopores size distribution to synthesize nc-MAPbBr3 through the infiltration of perovskite liquid precursors. We find that the control over the reaction volume imposed by the nanoporous scaffold gives rise to a strict control of the nanocrystal size, which allows us to observe well-defined quantum confinement effects on the photo-emission, being the luminescence maximum tunable with precision between λ = 530 nm (green) and λ = 490 nm (blue). This hybrid nc-MAPbBr3/MOx structure presents high mechanical stability and permits subsequent infiltration with an elastomer to achieve a self-standing flexible film, which not only maintains the photo-emission efficiency of the nc-MAPbBr3 unaltered but also prevents their environmental degradation. Applications as adaptable color-converting layers for light-emitting devices are envisaged and demonstrated.

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    The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acsami.8b11706.

    • Structural (SEM and XRD) and optical (PL and absorptance) characterization of MAPbBr3 and MAPbI3 nanocrystals embedded in SiO2- and TiO2-based matrices (PDF)

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    Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

    Cited By

    This article is cited by 20 publications.

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    13. Jordan H. Swisher, Liban Jibril, Sarah Hurst Petrosko, Chad A. Mirkin. Nanoreactors for particle synthesis. Nature Reviews Materials 2022, 7 (6) , 428-448. https://doi.org/10.1038/s41578-021-00402-z
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    18. Hao Chen, Hao Wang, Jiang Wu, Feng Wang, Ting Zhang, Yafei Wang, Detao Liu, Shibin Li, Richard V. Penty, Ian H. White. Flexible optoelectronic devices based on metal halide perovskites. Nano Research 2020, 13 (8) , 1997-2018. https://doi.org/10.1007/s12274-020-2805-x
    19. Chun-Ho Lin, Ting-You Li, Jing Zhang, Zong-Yi Chiao, Pai-Chun Wei, Hui-Chun Fu, Long Hu, Meng-Ju Yu, Ghada H. Ahmed, Xinwei Guan, Chih-Hsiang Ho, Tom Wu, Boon S. Ooi, Omar F. Mohammed, Yu-Jung Lu, Xiaosheng Fang, Jr-Hau He. Designed growth and patterning of perovskite nanowires for lasing and wide color gamut phosphors with long-term stability. Nano Energy 2020, 73 , 104801. https://doi.org/10.1016/j.nanoen.2020.104801
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