Effect of Fluorine Content in Thienothiophene-Benzodithiophene Copolymers on the Morphology and Performance of Polymer Solar Cells
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- 作者：Peng Liu ; Kai Zhang ; Feng Liu ; Yaocheng Jin ; Shengjian Liu ; Thomas P. Russell ; Hin-Lap Yip ; Fei Huang ; Yong Cao
- 刊名：Chemistry of Materials
- 出版年：2014
- 出版时间：May 13, 2014
- 年：2014
- 卷：26
- 期：9
- 页码：3009-3017
- 全文大小：464K
- 年卷期：v.26,no.9(May 13, 2014)
- ISSN：1520-5002
文摘
A new family of polythienothiophene-co-benzodithiophene copolymers with different amounts of fluorine decoration (PBFx) had been successfully synthesized. Detailed structure鈥損roperty investigations covering physical properties, morphology, and solar cell performance with respect to the fluorine content in the polymers were performed by a series of structural characterization techniques. A PCE of 8.75% was obtained with the highest fluorinated polymer; the morphological trends, as well as the crystalline structure, were also investigated, shedding light on this important material modification.