Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 6, Issue 35, Pages 9336-9340Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc03081b
Keywords
-
Funding
- NSF of China [21574013, 51003006]
- Beijing Natural Science Foundation [2182030]
- Program for Changjiang Scholars and Innovative Research Team in University
- Fundamental Research Funds for the Central Universities
Ask authors/readers for more resources
A novel propeller-shaped molecule (HPB-PDI6) with a hexaphenylbenzene (HPB) core and six peripheral PDI units was synthesized via Co-2(CO)(8)-catalyzed cyclotrimerization and used as an acceptor for organic solar cells (OSCs). The intriguing geometry of the HPB core and the spatial repulsion of the PDI rings created a twisted three-dimensional propeller-shaped conformation for HPB-PDI6. The propeller-shaped conformation could prevent the acceptor molecules from forming large aggregates in the active layer. As expected, the PTB7-Th:HPB-PDI6 blend films show a favorable morphology as well as high and balanced charge carrier mobility. Devices based on PTB7-Th:HPB-PDI6 achieved a PCE of 6.63% with a V-oc of 0.92 V, a J(sc) of 15.11 mA cm(-2), and an FF of 48.0%. Our results have demonstrated that the easily prepared propeller-shaped HPB-PDI6 could be a promising acceptor for high efficiency organic 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