Solution-Processable Ambipolar Diketopyrrolopyrrole鈥揝elenophene Polymer with Unprecedentedly High Hole and Electron Mobilities

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• 作者：Junghoon Lee ; A-Reum Han ; Jonggi Kim ; Yiho Kim ; Joon Hak Oh ; Changduk Yang
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：December 26, 2012
• 年：2012
• 卷：134
• 期：51
• 页码：20713-20721
• 全文大小：737K
• 年卷期：v.134,no.51(December 26, 2012)
• ISSN：1520-5126

文摘

There is a fast-growing demand for polymer-based ambipolar thin-film transistors (TFTs), in which both n-type and p-type transistor operations are realized in a single layer, while maintaining simplicity in processing. Research progress toward this end is essentially fueled by molecular engineering of the conjugated backbones of the polymers and the development of process architectures for device fabrication, which has recently led to hole and electron mobilities of more than 1.0 cm² V^鈥? s^鈥?. However, ambipolar polymers with even higher performance are still required. By taking into account both the conjugated backbone and side chains of the polymer component, we have developed a dithienyl-diketopyrrolopyrrole (TDPP) and selenophene containing polymer with hybrid siloxane-solubilizing groups (PTDPPSe-Si). A synergistic combination of rational polymer backbone design, side-chain dynamics, and solution processing affords an enormous boost in ambipolar TFT performance, resulting in unprecedentedly high hole and electron mobilities of 3.97 and 2.20 cm² V^鈥? s^鈥?, respectively.