Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 25, Issue 1, Pages 120-125Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201402210
Keywords
-
Categories
Funding
- Ministry of Education, Science and Technology (MEST), Korea through the Global Research Laboratory (GRL) program
- US Department of Energy through the Energy Frontier Research Center
- National Research Foundation of Korea [2007-00015] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
For the purpose of investigating the effect of fluorination position on D-A type conjugated polymer on photophysical and photovoltaic properties, two types of fluorinated polymere are synthesized, HF with fluorination on electron-donating unit and FH with fluorination on electron-accepting unit. Compared to non-fluorinated polymer, fluorinated polymers exhibit deeper HOMO energy levels without change of bandgap and stronger vibronic shoulder in UV-visible absorption, indicating that fluorination enhances intermolecular interaction. HF with fluorinated D unit exhibits well-developed fibril network, low bimolecular recombination and high hole mobility, which lead a high PCE of 7.10% in conventional single-junction solar cells, which is higher than the PCE (6.41%) of FH with fluorinated A unit. Therefore, this result demonstrates that fluorination on electron-donating unit in D-A polymers could be a promising strategy for achieving high performance polymer solar cells.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available