Stretchable electroluminescent fibers based on liquid metal compensation strategy,Chemical Engineering Journal

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Stretchable electroluminescent fibers based on liquid metal compensation strategy
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2024-12-19 , DOI: 10.1016/j.cej.2024.158783
Zhaosen Yuan, Zhuquan Zhou, Bohao Jin, Nan Li, Zheng Jiang, Minghui Guo, Qian Wang

Electroluminescent devices, particularly in fiber form, demand highly transparent and conductive materials as external electrodes to maintain high brightness during stretching. As a result, materials with poor conductivity but good transparency, or good conductivity but poor transparency, are restricted in their applicability. Addressing this challenge, we introduce a compensation strategy for external electrodes designed to compensate for the shortcomings of two conductive materials used in the preparation of stretchable electroluminescent fibers. Specifically, by introducing liquid metal as a compensatory conductive layer into the poly(3,4-ethylenedioxythiophene)–polystyrene sulfonate film on the fiber surface, the maximum brightness of the fiber can be achieved at 125.71 cd·m⁻². Furthermore, the fiber can be stretched to 253 % of its original length while still maintaining excellent luminescent brightness. After undergoing 100 cycles of stretching and recovery at 200 % of its original length, the brightness of the ACEL fiber exhibited a decrease of less than 5 %. The fiber also exhibits tunable luminescent color characteristics under varying voltages and frequencies, shifting from green to blue. Furthermore, after encapsulation, the fiber can operate underwater for extended periods. This strategy significantly broadens the range of electrode material options, and opens up a new research idea for the application of more conductive materials as electroluminescent fibers in smart textiles and wearable devices.

更新日期：2024-12-20

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