Determination of optimal ionic liquid for organic single-crystal field-effect transistors
Determination of optimal ionic liquid for organic single-crystal field-effect transistors
复制标题
DOI：
10.1063/1.4941667
复制
发表时间：
2016-02-08
影响因子：
4
通讯作者：
Seki, S.
中科院分区：
文献类型：
--
作者：
Ono, S.;Miwa, K.;Seki, S.
我们研究了有机单晶场效应晶体管与各种离子液体作为栅极电介质。我们发现，p型和n型有机半导体的场效应晶体管的迁移率随着离子液体的总电容的减小而增加。然而，它不依赖于在有机半导体和离子液体之间的界面处的离子种类。通过选择合适的离子液体，红荧烯单晶（p型）和7.7.8.8-四氰基对苯醌二甲烷单晶（n型）的载流子迁移率分别达到12.4cm（2）/Vs和0.13cm（2）/Vs。本研究阐明了离子液体对有机场效应晶体管器件性能的影响，并显示了一种方法，以最大限度地提高载流子迁移率在固/液界面。(C)2016 AIP Publishing LLC.
We investigate organic single-crystal field-effect transistors with various ionic liquids as gate dielectric. We find that the mobility of the field-effect transistors for both p-type and n-type organic semiconductors increases with decreasing total capacitance of the ionic liquid. However, it does not depend on the ion species at the interface between the organic semiconductor and the ionic liquid. By choosing an appropriate ionic liquid, a high carrier mobility of 12.4 cm(2)/V s in rubrene single crystals (p-type) and 0.13 cm(2)/V s in 7.7.8.8-Tetracyanoquinodimethane single crystals (n-type) are achieved. This study clarifies the influence of ionic liquids on the device performance of organic field-effect transistors and shows a way to maximize carrier mobility at the solid/liquid interface. (C) 2016 AIP Publishing LLC.