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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

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

Detail(s)

Original languageEnglish
Pages (from-to)11601-11612
Number of pages12
Journal / PublicationChemical Science
Volume11
Issue number42
Online published8 Oct 2020
Publication statusPublished - 14 Nov 2020
Externally publishedYes

Link(s)

Abstract

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. © The Royal Society of Chemistry 2020

Research Area(s)

Citation Format(s)

Boron(iii) β-diketonate-based small molecules for functional non-fullerene polymer solar cells and organic resistive memory devices. / Li, Panpan; Liang, Quanbin; Hong, Eugene Yau-Hin et al.
In: Chemical Science, Vol. 11, No. 42, 14.11.2020, p. 11601-11612.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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