Jump to main content
Jump to site search

Issue 16, 2017
Previous Article Next Article

Influence of a D–π–A system through a linked unit of double and triple bonds in a triarylene bridge for dye-sensitised solar cells

Author affiliations

Abstract

Herein, eight metal-free organic dyes (YH-1–YH-8) containing olefin or acetylene as π-spacer linkages in a triarylene bridge were synthesised. Moreover, two dyes (1N-PPP and 1N-PPS) without olefin and triple bonds as π-spacer linkages were used as references. The photophysical and electrochemical properties of the dyes were characterised, and the dyes were then used to fabricate dye-sensitised solar cells (DSSCs). We demonstrated the use of a D–π–A dipolar system by employing arylamine derivatives as an electron donor, triarylene with iterative olefin or acetylene as a π-bridge, and cyanoacrylic acid as an electron acceptor. YH-1 had olefin as a repeating unit in the triarylene bridge and exhibited broad absorption, favourable short-circuit photocurrent density (Jsc), and favourable open-circuit voltage (Voc) when used in a film morphology with DCA as a coabsorbent. The optimal device exhibited a Jsc of 16.23 mA cm−2, a Voc of 650 mV, and a fill factor of 0.67, corresponding to an overall conversion efficiency of 7.08%. The photophysical properties of the DSSCs were analysed using time-dependent density functional theory with the B3LYP functional.

Graphical abstract: Influence of a D–π–A system through a linked unit of double and triple bonds in a triarylene bridge for dye-sensitised solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Feb 2017, accepted on 26 Jun 2017 and first published on 28 Jun 2017


Article type: Paper
DOI: 10.1039/C7NJ00413C
Citation: New J. Chem., 2017,41, 8016-8025
  •   Request permissions

    Influence of a D–π–A system through a linked unit of double and triple bonds in a triarylene bridge for dye-sensitised solar cells

    R. Huang, Y. Chiu, Y. Chang, K. Chen, P. Huang, T. Chiang and Y. J. Chang, New J. Chem., 2017, 41, 8016
    DOI: 10.1039/C7NJ00413C

Search articles by author

Spotlight

Advertisements