journal article·2015-09-16

Understanding the Halogenation Effects in Diketopyrrolopyrrole-Based Small Molecule Photovoltaics

Shi-Xin Sun, Yong Huo, Miao-Miao Li, Xiaowen Hu, Hai-Jun Zhang, You-Wen Zhang, You-Dan Zhang, Xiao-Long Chen, Zi-Fa Shi, Xiong Gong, Yongsheng Chen, Hao-Li Zhang

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Abstract

Two molecules containing a central diketopyrrolopyrrole and two oligothiophene units have been designed and synthesized. Comparisons between the molecules containing terminal F (FDPP) and Cl (CDPP) atoms allowed us to evaluate the effects of halogenation on the photovoltaic properties of the small molecule organic solar cells (OSCs). The OSCs devices employing FDPP:PC71BM films showed power conversion efficiencies up to 4.32%, suggesting that fluorination is an efficient method for constructing small molecules for OSCs.
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Research context

OpenAlex topics: Organic Electronics and Photovoltaics · Conducting polymers and applications · Molecular Junctions and Nanostructures

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China

Institute of Polymer Chemistry and Collaborative Innovation Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China

Department of Polymer Engineering, College of Polymer Science and Engneering and Department of Polymer Engineering, College of Polymer Science and Engineering, The University of Akron, Akron, Ohio 44236, United States

Funding

National Natural Science Foundation of China · Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · State Administration of Foreign Experts Affairs

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