Alkyl Chain Extension as a Route to Novel Thieno[3,2-b]thiophene Flanked Diketopyrrolopyrrole Polymers for Use in Organic Solar Cells and Field Effect Transistors

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• 作者：Iain Meager ; Raja Shahid Ashraf ; Stephan Rossbauer ; Hugo Bronstein ; Jenny E. Donaghey ; Jonathan Marshall ; Bob C. Schroeder ; Martin Heeney ; Thomas D. Anthopoulos ; Iain McCulloch
• 刊名：Macromolecules
• 出版年：2013
• 出版时间：August 13, 2013
• 年：2013
• 卷：46
• 期：15
• 页码：5961-5967
• 全文大小：400K
• 年卷期：v.46,no.15(August 13, 2013)
• ISSN：1520-5835

文摘

The synthesis and characterization of four new donor鈥揳cceptor type semiconducting polymers based on the electron-deficient diketopyrrolopyrrole unit for use in photovoltaic devices are reported. The extended 2-decyl-1-tetradecyl alkyl chain (C₁₀C₁₂) is utilized to provide a valuable route toward enhanced solubility. The resultant soluble DPP polymers were synthesized in high polymer molecular weights with a larger range of accessible comonomer units. Bulk heterojunction solar cells containing these polymers show promising device performance with efficiencies around 4%. Organic thin film transistor devices with high ambipolar hole mobilities of >0.1 cm² V^鈥? s^鈥? are also reported.