| Autor: |
Lee S; Department of Materials Science and Engineering, Chungnam National University (CNU), Daejeon 34134, Republic of Korea., Cho WS; Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea., Park JY; Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea., Lee HJ; Department of Materials Science and Engineering, Chungnam National University (CNU), Daejeon 34134, Republic of Korea., Lee JL; Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea., Lee KH; Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea.; Education and Research Center for Smart Energy and Materials, Inha University, Incheon 22212, Republic of Korea., Hong K; Department of Materials Science and Engineering, Chungnam National University (CNU), Daejeon 34134, Republic of Korea. |
| Abstrakt: |
Herein, a new concept of device architecture to fabricate fibrous light-emitting devices is demonstrated based on an electrochemiluminescence (ECL) material for an electronic textile system. A unique feature of this work is that instead of conventional semiconductor materials, such as organics, perovskites, and quantum dots for fibrous light emitting devices, a solid-state ECL electrolyte gel is employed as a light-emitting layer. The solid-state ECL gel is prepared from a precursor solution composed of matrix polymer, ionic liquid, and ECL luminophore. From this, we successfully realize light-emitting fibers through a simple and cost-effective single-step dip-coating method in ambient air, without complicated multistep vacuum processes. The resulting fiber devices reliably operated under applied AC bias of ±2.5 V and showed luminance of 47 cd m -2 . More importantly, the light-emitting fibers exhibited outstanding water resistance without any passivation layers, owing to the water immiscible and hydrophobic nature of the ECL gel. In addition, because of their simple structure, the fiber devices can be easily deformed and woven together with commercial knitwear by hand. Therefore, these results suggest a promising strategy for the development of practical fiber displays and contribute to progress in electronic textile technology. |
