Journal
ORGANIC ELECTRONICS
Volume 48, Issue -, Pages 298-307Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2017.06.011
Keywords
Polymer solar cells; Side-chain engineering; Alkylthiophenylthienyl side chains; Benzo[1,2-b: 4,5-b'] dithiophene; Structure-property relationship
Funding
- National Natural Science Foundation of China [51573153, 61564003]
- Scientific Research Fund of Hunan Provincial Education Department [15A180]
- Hunan Collaborative Innovation Center of Chemical Engineering & Technology with Environmental Benignity and Effective Resource Utilization and Hunan Provincial Innovation Foundation for Postgraduate [CX2015B216]
Ask authors/readers for more resources
A donor-acceptor (D-A) conjugated copolymer PSBT-FTT, incorporating alkylthiophenylthienyl (SBT) side chains on benzo[1,2-b: 4,5-b'] dithiophene units (BDT), was designed and synthesized. Compared to the analogical polymer PSB-FTT with alkylthiophenyl (SB) side chains, PSBT-FTT exhibits stronger interchain pi-pi interaction, more redshifted absorption spectrum, stronger absorption coefficient, better compatibility with (7,7)-phenyl-C-71-butyric acid methyl ester (PC71BM), more effective exciton dissociation and higher hole mobility. Therefore, the PSBT-FTT-based bulk heterojunction polymer solar cells (PSCs) achieved a PCE value of 7.06% that is almost 50% higher than 4.83% of the PSB-FTT based PSCs. The result indicates that the introducing SBT side chains is an excellent strategy for designing high performance photovoltaic polymers. (C) 2017 Elsevier B.V. All rights reserved.
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
Share Paper
