Fast Response Organic Supramolecular Transistors Utilizing In-situ π-ion Gels
Fast Response Organic Supramolecular Transistors Utilizing In-situ π-ion Gels
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利用原位 π 离子凝胶的快速响应有机超分子晶体管
DOI：
10.1002/adma.202006061
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Uwe H. F. Bunz
中科院分区：
文献类型：
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作者：
Soh Kushida;Emanuel Smarsly;Irene Wacker;Yohei Yamamoto;Rasmus R. Schroder;Uwe H. F. Bunz
尽管超分子晶体管在形成有序纤维时具有显着的载流子迁移率，但其加工性能往往较差，阻碍了器件集成，导致跨导和输出电流令人失望。在此，提出了一类新型超分子晶体管：π离子凝胶晶体管（PIGT）。原位π离子凝胶是一种前所未有的半导体纳米纤维和封闭离子液体的复合材料，直接用作活性材料和内部电容器。与其他超分子晶体管相比，PIGT表现出高跨导（133 µS）和输出电流（-6 V时139 µA），同时保留高载流子迁移率（4.2 × 10−2cm2V−1s−1）和开/关比（3.7 × 104）。重要的是，独特的器件配置和与独特纳米偏析相关的高离子电导率使得累积模式电化学晶体管能够实现最快的响应（<20 µs）。考虑到没有介电层和易于制造工艺的优点，PIGT在印刷柔性器件中具有巨大的应用潜力。该器件平台广泛适用于各种超分子组装体，为超分子化学和有机电子学的跨学科研究提供了线索。
Despite their remarkable charge carrier mobility when forming well‐ordered fibers, supramolecular transistors often suffer from poor processability that hinders device integration, resulting in disappointing transconductance and output currents. Here, a new class of supramolecular transistors, π‐ion gel transistors (PIGTs), is presented. An in situ π‐ion gel, which is an unprecedented composite of semiconducting nanofibers and an enclosed ionic liquid, is directly employed as an active material and internal capacitor. In comparison to other supramolecular transistors, a PIGT displays a high transconductance (133 µS) and output current (139 µA at −6 V), while retaining a high charge‐carrier mobility (4.2 × 10−2cm2V−1s−1) and on/off ratio (3.7 × 104). Importantly, the unique device configuration and the high ionic conductivity associated with the distinct nanosegregation enables the fastest response among accumulation‐mode electrochemical‐based transistors (<20 µs). Considering the advantages of the absence of dielectric layers and the facile fabrication process, PIGT has great potential to be utilized in printed flexible devices. The device platform is widely applicable to various supramolecular assemblies, shedding light on the interdisciplinary research of supramolecular chemistry and organic electronics.