%0 Journal Article %1 ADFM:ADFM201702194 %A Gao, Wei %A An, Qiaoshi %A Ming, Ruijie %A Xie, Dongjun %A Wu, Kailong %A Luo, Zhenghui %A Zou, Yang %A Zhang, Fujun %A Yang, Chuluo %D 2017 %J Advanced Functional Materials %K nonfullerenacceptor organics smallMolecules %N 34 %P n/a--n/a %R 10.1002/adfm.201702194 %T Side Group Engineering of Small Molecular Acceptors for High-Performance Fullerene-Free Polymer Solar Cells: Thiophene Being Superior to Selenophene %U http://dx.doi.org/10.1002/adfm.201702194 %V 27 %X Side group of ITIC-like small molecular acceptor (SMA) plays a critical role in crystallization property. In this article, two new SMAs with n-hexylthienyl and n-hexylselenophenyl as side chain, namely ITCPTC-Th and ITCPTC-Se, are designed and synthesized by employing newly developed thiophene-fused ending group (CPTCN). And thiophene and selenophene side group substituted effects of SMA-based fullerene-free polymer solar cells (PSCs) are investigated. A stronger σ-inductive effect between selenophene side group and electron-donating backbone endows ITCPTC-Se with better optical absorption and higher LUMO level, ITCPTC-Th-based PSCs deliver a higher power conversion efficiency of 10.61%. Charge transport and collection, recombination loss mechanism, and morphology of blend films are intensively studied. These results confirm that side group substituted effects of SMAs are multiple and thiophene is a superior option to selenophene as aromatic side group of ITIC-like SMAs.

@article{ADFM:ADFM201702194, abstract = {Side group of ITIC-like small molecular acceptor (SMA) plays a critical role in crystallization property. In this article, two new SMAs with n-hexylthienyl and n-hexylselenophenyl as side chain, namely ITCPTC-Th and ITCPTC-Se, are designed and synthesized by employing newly developed thiophene-fused ending group (CPTCN). And thiophene and selenophene side group substituted effects of SMA-based fullerene-free polymer solar cells (PSCs) are investigated. A stronger σ-inductive effect between selenophene side group and electron-donating backbone endows ITCPTC-Se with better optical absorption and higher LUMO level, ITCPTC-Th-based PSCs deliver a higher power conversion efficiency of 10.61%. Charge transport and collection, recombination loss mechanism, and morphology of blend films are intensively studied. These results confirm that side group substituted effects of SMAs are multiple and thiophene is a superior option to selenophene as aromatic side group of ITIC-like SMAs.}, added-at = {2017-09-12T10:25:23.000+0200}, author = {Gao, Wei and An, Qiaoshi and Ming, Ruijie and Xie, Dongjun and Wu, Kailong and Luo, Zhenghui and Zou, Yang and Zhang, Fujun and Yang, Chuluo}, biburl = {https://www.bibsonomy.org/bibtex/23185a0974b0a52c59e47a18126bf5ff3/cgoehler}, doi = {10.1002/adfm.201702194}, interhash = {2c5c1609a3c490d2bf41add98bdbc26b}, intrahash = {3185a0974b0a52c59e47a18126bf5ff3}, issn = {1616-3028}, journal = {Advanced Functional Materials}, keywords = {nonfullerenacceptor organics smallMolecules}, number = 34, pages = {n/a--n/a}, timestamp = {2017-09-12T10:25:23.000+0200}, title = {Side Group Engineering of Small Molecular Acceptors for High-Performance Fullerene-Free Polymer Solar Cells: Thiophene Being Superior to Selenophene}, url = {http://dx.doi.org/10.1002/adfm.201702194}, volume = 27, year = 2017 }