Boron(iii) β-diketonate-based small molecules for functional non-fullerene polymer solar cells and organic resistive memory devices

Panpan Li, Quanbin Liang, Eugene Yau Hin Hong, Chin Yiu Chan, Yat Hin Cheng, Ming Yi Leung, Mei Yee Chan, Kam Hung Low, Hongbin Wu, Vivian Wing Wah Yam

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

A class of acceptor-donor-acceptor chromophoric small-molecule non-fullerene acceptors, 1-4, with difluoroboron(iii) β-diketonate (BF2bdk) as the electron-accepting moiety has been developed. Through the variation of the central donor unit and the modification on the peripheral substituents of the terminal BF2bdk acceptor unit, their photophysical and electrochemical properties have been systematically studied. Taking advantage of their low-lying lowest unoccupied molecular orbital energy levels (from -3.65 to -3.72 eV) and relatively high electron mobility (7.49 × 10-4 cm2 V-1 s-1), these BF2bdk-based compounds have been employed as non-fullerene acceptors in organic solar cells with maximum power conversion efficiencies of up to 4.31%. Moreover, bistable resistive memory characteristics with charge-trapping mechanisms have been demonstrated in these BF2bdk-based compounds. This work not only demonstrates for the first time the use of a boron(iii) β-diketonate unit in constructing non-fullerene acceptors, but also provides more insights into designing organic materials with multi-functional properties. This journal is

本文言語英語
ページ(範囲)11601-11612
ページ数12
ジャーナルChemical Science
11
42
DOI
出版ステータス出版済み - 11月 14 2020
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)

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