Journal
CHEMISTRY OF MATERIALS
Volume 26, Issue 14, Pages 4214-4220Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm502229k
Keywords
-
Funding
- Ministry of Education, Science and Technology (MEST), Korea through the Global Research Laboratory (GRL) program
- U.S. Department of Energy through the Energy Frontier Research Center
Ask authors/readers for more resources
For the purpose of examining the tuning of photophysical property by fluorine atom substitution, fluorinated and nonfluorinated poly(3,4-dialkylterthiophenes) (PDATs) were synthesized, and their photovoltaic properties were compared. Fluorinated PDATs exhibit a deeper highest occupied molecular orbital energy level than nonfluorinated ones, leading to higher open-circuit voltage in organic solar cells and also enhanced molecular ordering as evidenced by a vibronic shoulder in UV-vis spectra, pi-pi scattering in GIWAXS, and a well-developed fibril structure in TEM, which contributes to efficient charge transport. As a result, the fluorine substitution increases the power conversion efficiency by 20% to 250% as compared with nonfluorinated PDATs.
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