An Air-Stable DPP-thieno-TTF Copolymer for Single-Material Solar Cell Devices and Field Effect Transistors

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• 作者：Sasikumar Arumugam ; Diego Cortizo-Lacalle ; Stephan Rossbauer ; Simon Hunter ; Alexander L. Kanibolotsky ; Anto R. Inigo ; Paul A. Lane ; Thomas D. Anthopoulos ; Peter J. Skabara
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：December 30, 2015
• 年：2015
• 卷：7
• 期：51
• 页码：27999-28005
• 全文大小：467K
• ISSN：1944-8252

文摘

Following an approach developed in our group to incorporate tetrathiafulvalene (TTF) units into conjugated polymeric systems, we have studied a low band gap polymer incorporating TTF as a donor component. This polymer is based on a fused thieno-TTF unit that enables the direct incorporation of the TTF unit into the polymer, and a second comonomer based on the diketopyrrolopyrrole (DPP) molecule. These units represent a donor–acceptor copolymer system, p(DPP-TTF), showing strong absorption in the UV–visible region of the spectrum. An optimized p(DPP-TTF) polymer organic field effect transistor and a single material organic solar cell device showed excellent performance with a hole mobility of up to 5.3 × 10^–2 cm²/(V s) and a power conversion efficiency (PCE) of 0.3%, respectively. Bulk heterojunction organic photovoltaic devices of p(DPP-TTF) blended with phenyl-C₇₁-butyric acid methyl ester (PC₇₁BM) exhibited a PCE of 1.8%.