Solvent-Dispersed Benzothiadiazole-Tetrathiafulvalene Single-Crystal Nanowires and Their Application in Field-Effect Transistors
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- 作者：Neil M. Tucker ; Alejandro L. Briseno ; Orb Acton ; Hin-Lap Yip ; Hong Ma ; Samson A. Jenekhe ; Younan Xia ; Alex K.-Y. Jen
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2013
- 出版时间：April 10, 2013
- 年：2013
- 卷：5
- 期：7
- 页码：2320-2324
- 全文大小：317K
- 年卷期：v.5,no.7(April 10, 2013)
- ISSN：1944-8252
文摘
A new organic semiconductor (BT-TTF) based on molecular moieties of benzothiadiazole and tetrathiafulvalene was designed and synthesized, and its structure, molecular packing and charge-transporting properties were determined. Thermal properties, electrochemical behaviors, and optical absorption of this molecule were studied by using differential scanning calorimetry/thermal gravimetric analysis, cyclic voltammetry, and ultraviolet鈥搗isible spectroscopy, respectively. Its bulk and nanowire single crystals were prepared and characterized by X-ray crystallography, scanning electron microscopy, transmission electron microscopy, and field-effect transistors. It is found that short intermolecular S路路路S (3.41 脜), S路路路C (3.49 脜), and S路路路N (3.05 脜) contacts define the solid-state structure of BT-TTF single crystals which 蟺-stack along the [100] with interplanar distances of 3.49 脜. Solvent-cast single-crystal nanowire transistors showed mobilities as large as 0.36 cm2/(V s) with current on/off ratios of 1 脳 106. This study further illustrates the impact of molecular design and a demonstration of high-performance single-crystal nanowire transistors from the resulting semiconductor.