Lee, Sang Yeop Jeon, Sanghyun Ahn, Junhyuk Bang, Junsung Woo, Ho Kun Lee, Kyu-joon Jung, Byung Ku Park, Taesung Son, Donghee Ahn, Jae-Pyoung Oh, Song Ju 2024-01-19T13:32:40Z 2024-01-19T13:32:40Z 2022-01-25 2021-10-15 0169-4332 https://pubs.kist.re.kr/handle/201004/116256 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'e ' clairage (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. English ELSEVIER Highly stretchable white-light electroluminescent devices with gel-type silica-coated all-inorganic perovskite Article 10.1016/j.apsusc.2021.150229 1 APPLIED SURFACE SCIENCE, v.563 APPLIED SURFACE SCIENCE 563 N scie scopus 000691459900002 2-s2.0-85108738191 Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article ANION-EXCHANGE OPTICAL-PROPERTIES NANOCRYSTALS STABILITY EMISSION LATTICE CSPBX3 LEDS SKIN BR Cesium lead halide perovskite Stretchable device White light Surface modification Surface chemistry