Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 36, Pages 19914-19922Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b03488
Keywords
solution-processed small molecules; diketopyrrolopyrrole; organic solar cells; halogenation effect; device optimization
Funding
- National Basic Research Program of China (973 Program) [2012CB933102]
- National Natural Science Foundation of China (NSFC) [21233001, 21190034]
- Fundamental Research Funds for the Central Universities
- 111 Project
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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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