Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 10, Issue 1, Pages 258-265Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ee02851a
Keywords
-
Funding
- National Research Foundation of Korea (NRF) grant - Korea government (MSIP) [2015R1A2A1A10053397]
- MEST
- POSTECH
- UNIST UCRF
- National Research Foundation of Korea [2015R1A2A1A10053397, 2015H1A2A1033682] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Ternary organic solar cells (OSCs), with a simple structure, can be easily adopted as sub-cells in a tandem design, thereby further enhancing the power conversion efficiency (PCE). Considering the potential to surpass the theoretical PCE limit in OSCs, we incorporated a benzo[ 1,2-b; 4,5-b']dithiophene-based small molecule into a poly(4,8-bis(5-(2-ethylhexyl) thiophen-2-yl) benzo[ 1,2-b; 4,5-b']dithiophene-2, 6-diyl-alt-(4-(2-ethylhexyl)-3-fluorothieno[3,4-b]thiophene-)-2-carboxylate-2-6-diyl):[6,6]-phenyl-C-71-butyric acid methyl ester host system. A hitherto unrealized PCE of 12.1% was achieved at the optimized composition of the ternary blend. The ternary blend surprisingly had a face-on and edge-on co-existent texture, which is far better than that of the face-on orientated host film. To the best of our knowledge, this intriguing result refutes for the first time a general paradigm that high-performance OSCs are unambiguously linked to face-on structures. Therefore, our study provides a new platform for refining the theoretical underpinning of multiple blending OSCs.
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