Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Joint International Research Lab of Lignocellulosic Functional Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
College of Biology and Environment, Nanjing Forestry University, Nanjing 210037, China.
Carbohydr Polym. 2022 Nov 15;296:119891. doi: 10.1016/j.carbpol.2022.119891. Epub 2022 Jul 21.
Stretchable electroluminescent (EL) devices show great potential for wearable displays. However, the integration of stretchability, flexibility, temperature-tolerance, waterproofness and biocompatibility into a single EL device remains a challenge. Herein, we report a facile full solution-process method for a novel EL device consisting of a dielectric luminescent layer sandwiched between two silver nanowires-cellulose nanocrystals with II crystalline allomorphs/polydopamine-polydimethylsiloxane (CNC II-AgNWs/PDA-PDMS) electrodes. CNC II is used as a green dispersant, film-forming agent and antioxidant to improve the optical, electrical, mechanical and antioxidant properties of the electrodes. The electrodes exhibit a smooth surface, low sheet resistance (11 Ω sq), high transparency (79.2 %), ideal stretchability (~100 % strain) and excellent inoxidizability. The assembled EL devices with outstanding tensile stability and fatigue resistance demonstrate excellent luminance, flexibility and stretchability underwater and at extreme temperatures, as well as intrinsic biocompatibility. Our multifunctional EL devices with outstanding integrated properties provide new insights for the next-generation flexible electronics.
可拉伸电致发光（EL）器件在可穿戴显示器方面具有巨大的应用潜力。然而，将可拉伸性、灵活性、耐温性、防水性和生物相容性集成到单个 EL 器件中仍然是一个挑战。在此，我们报告了一种简便的全溶液处理方法，用于制造一种新型的 EL 器件，该器件由介电发光层夹在具有 II 晶型同素异形体的银纳米线-纤维素纳米晶/聚多巴胺-聚二甲基硅氧烷（CNC II-AgNWs/PDA-PDMS）电极之间。CNC II 被用作绿色分散剂、成膜剂和抗氧化剂，以提高电极的光学、电学、机械和抗氧化性能。电极具有光滑的表面、低的面电阻（11 Ω sq）、高的透明度（79.2%）、理想的拉伸性（~100%应变）和优异的抗氧化性。组装的 EL 器件具有出色的拉伸稳定性和抗疲劳性，在水下和极端温度下具有优异的亮度、灵活性和拉伸性，以及内在的生物相容性。我们的多功能 EL 器件具有出色的综合性能，为下一代柔性电子产品提供了新的思路。
