Understanding the Halogenation Effects in Diketopyrrolopyrrole-Based Small Molecule Photovoltaics
ACS Applied Materials & Interfaces2015Vol. 7(36), pp. 19914–19922
Citations Over TimeTop 10% of 2015 papers
Shixin Sun, Yong Huo, Miaomiao Li, Xiaowen Hu, Haijun Zhang, Youwen Zhang, Youdan Zhang, Xiaolong Chen, Zi‐Fa Shi, Xiong Gong, Yongsheng Chen, Hao‐Li Zhang
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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