Electric-double-layer field-effect transistors with ionic liquids
Electric-double-layer field-effect transistors with ionic liquids
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DOI：
10.1039/c3cp50755f
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发表时间：
2013-01-01
影响因子：
3.3
通讯作者：
Awaga, Kunio
中科院分区：
文献类型：
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作者：
Fujimoto, Takuya;Awaga, Kunio
载流子控制是电致变色材料电子功能开发的关键问题。除了简单的导电性增强之外，高电荷载流子积累可以实现各种现象，例如化学反应、相变、磁有序和超导电性。双电层（EDL），形成在固体电解质界面，诱导非常大的电场。这导致固体中的高电荷载流子积累，比固体介电材料有效得多。在本综述中，我们描述了在场效应晶体管（FET）与离子液体的栅极负离子，引起了人们的关注，由于其宽的电化学窗口，低蒸汽压，高的化学和物理稳定性的最新发展。我们解释了离子液体的电容效应，并描述了离子液体与有机和无机半导体的各种组合，用于实现高晶体管性能，绝缘体-金属转变，超导性和铁磁性等效果，除了在逻辑器件中的离子液体EDL-FET的应用。我们讨论了这些类型的FET的迁移率和阈值电压的控制因素，并显示了晶体管性能的离子液体依赖性。
Charge carrier control is a key issue in the development of electronic functions of semiconductive materials. Beyond the simple enhancement of conductivity, high charge carrier accumulation can realize various phenomena, such as chemical reaction, phase transition, magnetic ordering, and superconductivity. Electric double layers (EDLs), formed at solid-electrolyte interfaces, induce extremely large electric fields. This results in a high charge carrier accumulation in the solid, much more effectively than solid dielectric materials. In the present review, we describe recent developments in the field-effect transistors (FETs) with gate dielectrics of ionic liquids, which have attracted much attention due to their wide electrochemical windows, low vapor pressures, and high chemical and physical stability. We explain the capacitance effects of ionic liquids, and describe the various combinations of ionic liquids and organic and inorganic semiconductors that are used to achieve such effects as high transistor performance, insulator-metal transitions, superconductivity, and ferromagnetism, in addition to the applications of the ionic-liquid EDL-FETs in logic devices. We discuss the factors controlling the mobility and threshold voltage in these types of FETs, and show the ionic liquid dependence of the transistor performance.