%0 Journal Article %1 ADMA:ADMA201606054 %A Zhang, Guangjun %A Yang, Guofang %A Yan, He %A Kim, Joo-Hyun %A Ade, Harald %A Wu, Wenlin %A Xu, Xiaopeng %A Duan, Yuwei %A Peng, Qiang %D 2017 %J Advanced Materials %K polymer solar-cell %P n/a--n/a %R 10.1002/adma.201606054 %T Efficient Nonfullerene Polymer Solar Cells Enabled by a Novel Wide Bandgap Small Molecular Acceptor %U http://dx.doi.org/10.1002/adma.201606054 %X A wide bandgap small molecular acceptor, SFBRCN, containing a 3D spirobifluorene core flaked with a 2,1,3-benzothiadiazole (BT) and end-capped with highly electron-deficient (3-ethylhexyl-4-oxothiazolidine-2-yl)dimalononitrile (RCN) units, has been successfully synthesized as a small molecular acceptor (SMA) for nonfullerene polymer solar cells (PSCs). This SMA exhibits a relatively wide optical bandgap of 2.03 eV, which provides a complementary absorption to commonly used low bandgap donor polymers, such as PTB7-Th. The strong electron-deficient BT and RCN units afford SFBRCN with a low-lying LUMO (lowest unoccupied molecular orbital) level, while the 3D structured spirobifluorene core can effectively suppress the self-aggregation tendency of the SMA, thus yielding a polymer:SMA blend with reasonably small domain size. As the results of such molecular design, SFBRCN enables nonfullerene PSCs with a high efficiency of 10.26%, which is the highest performance reported to date for a large bandgap nonfullerene SMA.

@article{ADMA:ADMA201606054, abstract = {A wide bandgap small molecular acceptor, SFBRCN, containing a 3D spirobifluorene core flaked with a 2,1,3-benzothiadiazole (BT) and end-capped with highly electron-deficient (3-ethylhexyl-4-oxothiazolidine-2-yl)dimalononitrile (RCN) units, has been successfully synthesized as a small molecular acceptor (SMA) for nonfullerene polymer solar cells (PSCs). This SMA exhibits a relatively wide optical bandgap of 2.03 eV, which provides a complementary absorption to commonly used low bandgap donor polymers, such as PTB7-Th. The strong electron-deficient BT and RCN units afford SFBRCN with a low-lying LUMO (lowest unoccupied molecular orbital) level, while the 3D structured spirobifluorene core can effectively suppress the self-aggregation tendency of the SMA, thus yielding a polymer:SMA blend with reasonably small domain size. As the results of such molecular design, SFBRCN enables nonfullerene PSCs with a high efficiency of 10.26%, which is the highest performance reported to date for a large bandgap nonfullerene SMA.}, added-at = {2017-03-06T08:31:26.000+0100}, author = {Zhang, Guangjun and Yang, Guofang and Yan, He and Kim, Joo-Hyun and Ade, Harald and Wu, Wenlin and Xu, Xiaopeng and Duan, Yuwei and Peng, Qiang}, biburl = {https://www.bibsonomy.org/bibtex/2f1222e62d1ea52bacf36eacfc56d6b51/baumbach}, description = {Efficient Nonfullerene Polymer Solar Cells Enabled by a Novel Wide Bandgap Small Molecular Acceptor - Zhang - 2017 - Advanced Materials - Wiley Online Library}, doi = {10.1002/adma.201606054}, interhash = {5e03280509c202882ac39d3c28f11420}, intrahash = {f1222e62d1ea52bacf36eacfc56d6b51}, issn = {1521-4095}, journal = {Advanced Materials}, keywords = {polymer solar-cell}, pages = {n/a--n/a}, timestamp = {2017-03-06T08:31:26.000+0100}, title = {Efficient Nonfullerene Polymer Solar Cells Enabled by a Novel Wide Bandgap Small Molecular Acceptor}, url = {http://dx.doi.org/10.1002/adma.201606054}, year = 2017 }