High-mobility, low-power, and fast-switching organic field-effect transistors with ionic liquids
High-mobility, low-power, and fast-switching organic field-effect transistors with ionic liquids
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DOI：
10.1063/1.2898203
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发表时间：
2008-03-10
影响因子：
4
通讯作者：
Takeya, J.
中科院分区：
文献类型：
--
作者：
Ono, S.;Seki, S.;Takeya, J.
我们报告高迁移率红荧烯单晶场效应晶体管与离子液体（IL）电解质用于栅极介电层。由于快速离子扩散形成双电层，即使在0.1 MHz下，它们的电容仍保持在1 μ F/cm（2）以上。在红荧烯晶体中具有1.2 cm（2）/V s的高载流子迁移率，在仅0.2 V的栅极电压下实现了显著的电流放大，这比具有介电栅极绝缘体的有机薄膜晶体管所需的电压小两个数量级。结果表明，IL/有机半导体界面适合于实现低功率和快速开关的场效应晶体管，而不会在形成固/液界面时牺牲载流子迁移率。(c)2008年美国物理研究所。
We report high-mobility rubrene single-crystal field-effect transistors with ionic-liquid (IL) electrolytes used for gate dielectric layers. As the result of fast ionic diffusion to form electric double layers, their capacitances remain more than 1 mu F/cm(2) even at 0.1 MHz. With high carrier mobility of 1.2 cm(2)/V s in the rubrene crystal, pronounced current amplification is achieved at the gate voltage of only 0.2 V, which is two orders of magnitude smaller than that necessary for organic thin-film transistors with dielectric gate insulators. The results demonstrate that the IL/organic semiconductor interfaces are suited to realize low-power and fast-switching field-effect transistors without sacrificing carrier mobility in forming the solid/liquid interfaces. (c) 2008 American Institute of Physics.