Two-dimensional crystal growth of thermally converted organic semiconductors at the surface of ionic liquid and high-mobility organic field-effect transistors
Two-dimensional crystal growth of thermally converted organic semiconductors at the surface of ionic liquid and high-mobility organic field-effect transistors
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DOI：
10.1016/j.orgel.2013.01.004
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发表时间：
2013-04-01
影响因子：
3.2
通讯作者：
Takeya, Jun
中科院分区：
文献类型：
--
作者：
Soeda, Junshi;Okamoto, Toshihiro;Takeya, Jun
我们报道了一种新的溶液结晶方法，通过热转化溶解在离子液体（ILs）中的前体分子来生长二维片状单晶的众所周知的不溶性有机半导体。通过优化晶体生长条件，考虑离子液体的物理性质，如密度和粘度，我们成功地和可重复地获得并五苯和二萘并[2，3-B：2 '，3'-f]噻吩并[3，2-B]噻吩（DNTT）单晶的薄片状，其中几乎最好的性能的场效应晶体管构造的两个化合物。这种快速而简单的技术开辟了将几乎不溶的有机半导体材料用于高性能印刷电子产品的道路，这使得大规模生产和大面积有机电路器件成为可能。(C)2013爱思唯尔有限公司版权所有。
We report a novel solution-crystallization method to grow two-dimensional platelet-shaped single-crystals of well-known insoluble organic semiconductors via thermal conversion of their precursor molecules dissolved in ionic liquids (ILs). By optimizing conditions of the crystal growth regarding physical properties of ILs such as density and viscosity, we successfully and reproducibly obtained thin platelets of pentacene and dinaphtho[2,3-b:2',3'-f] thieno[3,2-b]thiophene (DNTT) single-crystals, with which nearly the best performing field-effect transistors are constructed for the two compounds. The prompt and simple technique has opened the way to use practically insoluble organic semiconductor materials for high-performance printed electronics, which enables mass-producible and large-area organic circuitry devices. (C) 2013 Elsevier B.V. All rights reserved.