Volume 134, Issue 26
Article

Phosphate ester side-chain-modified conjugated polymer for hybrid solar cells

Zhongqiang Zhang

Zhongqiang Zhang

Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People's Republic of China

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Zhengneng Jin

Zhengneng Jin

Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People's Republic of China

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Weifei Fu

Weifei Fu

Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People's Republic of China

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Minmin Shi

Minmin Shi

Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People's Republic of China

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Hongzheng Chen

Corresponding Author

Hongzheng Chen

Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027 People's Republic of China

Correspondence to: H. Chen (E-mail: [email protected])Search for more papers by this author
First published: 03 March 2017
Citations: 3

ABSTRACT

Although nanocrystals have several advantages of tunable bandgap and high carrier mobility, it is still challenging to achieve high-performance polymer: nanocrystals hybrid solar cells (HSC) due to the complicated surface problem. Many efforts have been devoted to replace the long alkyl chain on the surface of nanocrystals to improve the charge transfer and transport. Herein, we modified the alkyl chain in poly[2,6–(4,4-bis(2-ethylhexyl)−4H-cyclopenta[2,1-b;3,4-b′]-dithiophene)-alt-4,7–(2,1,3-benzothiadiazole)] (PCPDTBT) by phosphate ester. Due to its strong affinity to CdSe nanocrystals, the resulting polymers can spontaneously exchange the long chain ligands in one-step process. With the improved morphology of polymer: CdSe blended film, a power conversion efficiency (PCE) of 3.12% was achieved for hybrid solar cells. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45003.

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