Highly stretchable white-light electroluminescent devices with gel-type silica-coated all-inorganic perovskite

Sang Yeop Lee, Sanghyun Jeon, Junhyuk Ahn, Junsung Bang, Ho Kun Woo, Kyu joon Lee, Byung Ku Jung, Taesung Park, Donghee Son, Jae Pyoung Ahn, Soong Ju Oh

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    22 Citations (Scopus)

    Abstract

    In this study, a highly stretchable white-light electroluminescent device is fabricated using chemically designed perovskite nanocrystals (NCs). To incorporate perovskite into a stretchable polymer matrix without any degradation, gel-type silica-coated CsPbBr3 and CsPbBrxI3-x NC inks are prepared using (3-aminopropyl) triethoxysilane (APTES) with a sacrificial solvent of hexane. The chemical, optical, and structural properties of powdered and gel-type perovskite NCs with and without APTES are investigated. Silica shell with APTES treatment improves the stability of perovskite NCs, and gel-type inks improve the dispersivity in the polymer matrix. These enable the fabrication of stretchable and luminescent NC/polymer matrices with enhanced and uniform luminescence properties. By utilizing these materials, we propose a stretchable electroluminescent device emitting strong white light that is close to the ideal white position in Commission Internationale de l'éclairage (CIE) with optical simulation. Herein, we fabricate a multi-color filter with high color reproducibility on stretchable blue electroluminescent devices for white-light generation. Furthermore, all-solution-processed, color-filterless, stretchable, white-light electroluminescence devices with excellent optical and mechanical properties are fabricated.

    Original languageEnglish
    Article number150229
    JournalApplied Surface Science
    Volume563
    DOIs
    Publication statusPublished - 2021 Oct 15

    Bibliographical note

    Funding Information:
    This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2019R1C1C1003319), and Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT (NRF-2018M3D1A1059001). This work is also supported by the Materials Innovation Project (NRF-2021M3H4A3026733) through the National Research Foundation of Korea (NRF), and by a Korea University Grant.

    Publisher Copyright:
    © 2021

    Keywords

    • Cesium lead halide perovskite
    • Stretchable device
    • Surface chemistry
    • Surface modification
    • White light

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Surfaces, Coatings and Films
    • Surfaces and Interfaces

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