Wafer-scale, layer-controlled organic single crystals for high-speed circuit operation.
Wafer-scale, layer-controlled organic single crystals for high-speed circuit operation.
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DOI：
10.1126/sciadv.aao5758
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发表时间：
2018-03
期刊：
影响因子：
13.6
通讯作者：
Takeya J
中科院分区：
文献类型：
--
作者：
Yamamura A;Watanabe S;Uno M;Mitani M;Mitsui C;Tsurumi J;Isahaya N;Kanaoka Y;Okamoto T;Takeya J
晶圆级2D有机单晶半导体彻底改变了近场通信。二维（2D）层状半导体是一类新型的功能材料，其是电子应用的理想平台，其中整个电子状态直接通过邻近其电子通道的外部刺激进行修改。在保持均匀单晶的同时扩大面积覆盖率一直是相关的挑战。我们证明，通过简单的一次溶液工艺，可以成功地形成由具有10 cm 2 V-1 s-1的优异迁移率的有机半导体双分子层组成的晶片尺寸的单晶。实现由最小分子单元组成的有机单晶的良好控制过程实现了前所未有的低接触电阻，并导致20 MHz的高速晶体管操作，这是近场无线通信中常用频率的两倍。溶液工艺扩大高迁移率有机半导体覆盖范围的能力为新型2D纳米材料开辟了道路，以实现在膜基器件上具有大规模集成电路的产品。
A wafer-scale, 2D organic single-crystalline semiconductor revolutionizes near-field communication. Two-dimensional (2D) layered semiconductors are a novel class of functional materials that are an ideal platform for electronic applications, where the whole electronic states are directly modified by external stimuli adjacent to their electronic channels. Scale-up of the areal coverage while maintaining homogeneous single crystals has been the relevant challenge. We demonstrate that wafer-size single crystals composed of an organic semiconductor bimolecular layer with an excellent mobility of 10 cm2 V−1 s−1 can be successfully formed via a simple one-shot solution process. The well-controlled process to achieve organic single crystals composed of minimum molecular units realizes unprecedented low contact resistance and results in high-speed transistor operation of 20 MHz, which is twice as high as the common frequency used in near-field wireless communication. The capability of the solution process for scale-up coverage of high-mobility organic semiconductors opens up the way for novel 2D nanomaterials to realize products with large-scale integrated circuits on film-based devices.
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