基于具有高导电性、拉伸性和透光率的咪唑氯化物离子凝胶薄膜的可穿戴交流电致发光器件,Journal of Materials Chemistry C

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基于具有高导电性、拉伸性和透光率的咪唑氯化物离子凝胶薄膜的可穿戴交流电致发光器件
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2023-03-29 , DOI: 10.1039/d3tc00532a
Gongman Zhang ₁ , Yang Guo _{2,

3} , Yongzheng Fang ₁ , Yaoqing Chu ₁ , Zhifu Liu _{1,

2}

Affiliation

离子凝胶结合了凝胶聚合物和离子液体（ILs）的优点，不仅具有高离子电导率，而且具有良好的柔韧性，适用于可穿戴电致发光器件。针对导电水凝胶电导率低、透光率低和拉伸性能差的问题，提出了一种具有诱人性能的新型离子凝胶。结果表明，1-乙基-3-甲基咪唑氯化物（EmimCl）掺入聚乙烯醇（PVA）作为离子提供剂不仅提高了凝胶的电导率，而且提高了聚合物链的流动性和自愈率作为增塑剂。当EmimCl含量为100 wt%时，离子凝胶的离子电导率为3.4×10 ^-3 S cm ^-1，断裂伸长率为240%，透光率为94%。基于离子凝胶（PBE）良好的柔韧性、导电性和透光性，制备了具有夹层结构的柔性电致发光器件。所测试的设备同时表现出高灵活性、高稳定性和可观的发光强度（3 V 输入，114 cd m ^-2，驱动辅助 50 V，400 Hz），展示了它们在可穿戴设备领域的潜在应用。

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A wearable alternating current electroluminescent device based on imidazole chloride ionogel films with high conductivity, stretchability and transmittance

Ionogels combine the advantages of gel polymers and ionic liquids (ILs), and not only have high ionic conductivity but also have favorable flexibility and are suitable for wearable electroluminescent devices. Aiming at solving the problems of low conductivity, low transmittance and poor tensile properties of conductive hydrogels, a new ionogel with attractive properties is presented. The results show that 1-ethyl-3-methylimidazolium chloride (EmimCl) incorporated in polyvinyl alcohol (PVA) not only improves the conductivity of the gel as an ion providing agent, but also improves the mobility and self-healing rate of the polymer chain as a plasticizer. When the EmimCl content is 100 wt%, the ionogel has an ionic conductivity of 3.4 × 10⁻³ S cm⁻¹, an elongation at break value of 240%, and a light transmission of 94%. Based on the favorable flexibility, conductivity and light transmission of ionogels (PBE), flexible electroluminescent devices have been prepared with sandwich structures. The tested devices simultaneously exhibit high flexibility, high stability and considerable luminous intensity (3 V input, 114 cd m⁻², drive assist 50 V, 400 Hz), showing their potential application in the field of wearable devices.

更新日期：2023-03-29

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