Intrinsically Chemo- and Thermostable Electron Acceptors for Efficient Organic Solar Cells
Publication in refereed journal

香港中文大學研究人員
替代計量分析
.

其它資訊
摘要The traditional preparation of non-fullerene acceptors (NFAs) via Knoevenagel condensation reaction (KCR) of aldehyde and active methylene leaves vulnerable and reversible exocyclic vinyl bonds in structures, which undermine the intrinsic chemo- and photostability of NFAs. In this work, we demonstrate a new access to acceptor-donor-acceptor (A-D-A) NFAs via Stille coupling between new electron deficient groups and classic donor core in over 90% yield, wherein the robust carbon-carbon bonds, replacing the exocyclic double bonds from traditional KCR, result in stable A-D-A acceptors, Q1-XF (X representing 0, 2 and 4 fluorine atoms, respectively). Among the three studied examples, Q1-4F exhibits improved optoelectronic and electron transport properties, leading to the best photovoltaic performance with optimal charge kinetics for Q1-4F based OSCs. Overall, this strategy can lead to a new way for developing stable photovoltaic materials.
著者Zhang QQ, Li YK, Wang D, Chen Z, Li YH, Li SX, Zhu HM, Lu XH, Chen HZ, Li CZ
期刊名稱Bulletin of the Chemical Society of Japan
出版年份2021
月份1
卷號94
期次1
出版社CHEMICAL SOC JAPAN
頁次183 - 190
國際標準期刊號0009-2673
電子國際標準期刊號1348-0634
語言英式英語
關鍵詞Organic solar cells, Non-fullerene acceptors, Stability
Web of Science 學科類別Chemistry, Multidisciplinary;Chemistry

上次更新時間 2021-14-06 於 00:09