Highly stretchable white-light electroluminescent devices with gel-type silica-coated all-inorganic perovskite
- Authors
- Lee, S.Y.; Jeon, S.; Ahn, J.; Bang, J.; Woo, H.K.; Lee, K.-J.; Jung, B.K.; Park, T.; Son, D.; Ahn, J.-P.; Oh, S.J.
- Issue Date
- 15-10월-2021
- Publisher
- Elsevier B.V.
- Keywords
- Cesium lead halide perovskite; Stretchable device; Surface chemistry; Surface modification; White light
- Citation
- Applied Surface Science, v.563
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Surface Science
- Volume
- 563
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/128582
- DOI
- 10.1016/j.apsusc.2021.150229
- ISSN
- 0169-4332
- 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. © 2021
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