Jump to main content
Jump to site search

Issue 38, 2014
Previous Article Next Article

Gel electrolyte materials formed from a series of novel low molecular mass organogelators for stable quasi-solid-state dye-sensitized solar cells

Author affiliations

Abstract

Electrolyte materials are the key components in dye-sensitized solar cells (DSCs) and are very crucial to the performance and long-term stability of DSCs. We developed a series of diamide derivatives as novel low molecular mass organogelators (LMOGs) for DSCs. These LMOGs contain different numbers (2, 6, 5 and 9) of methylene groups (–CH2–) between the two amide carbonyl groups and exhibit distinctive self-assembly behaviors. The gel electrolytes prepared by these LMOGs possess high gel-to-solution transition temperatures (over 100 °C) and the stability of DSCs is largely enhanced. More importantly, the parity of the number of –CH2– and their special molecular arrangements have a remarkable influence on the self-assembly of the gelators resulting in a significantly different morphology, and further influence the photovoltaic performances of DSCs. It is found that the LMOGs containing odd-numbered –CH2– lead to a much better charge transport of the gel electrolytes, inducing a longer electron lifetime and higher incident photon-to-electron conversion efficiency compared with the LMOGs containing even-numbered –CH2–. Finally, a superior quasi-solid-state DSC based on the gelator containing five –CH2– is obtained, which exhibits a photoelectric conversion efficiency of 7.53% and excellent thermal and light-soaking stabilities during accelerated aging tests.

Graphical abstract: Gel electrolyte materials formed from a series of novel low molecular mass organogelators for stable quasi-solid-state dye-sensitized solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Jun 2014, accepted on 25 Jul 2014 and first published on 20 Aug 2014


Article type: Paper
DOI: 10.1039/C4TA02895C
Citation: J. Mater. Chem. A, 2014,2, 15921-15930
  •   Request permissions

    Gel electrolyte materials formed from a series of novel low molecular mass organogelators for stable quasi-solid-state dye-sensitized solar cells

    L. Tao, Z. Huo, Y. Ding, L. Wang, J. Zhu, C. Zhang, X. Pan, M. K. Nazeeruddin, S. Dai and M. Grätzel, J. Mater. Chem. A, 2014, 2, 15921
    DOI: 10.1039/C4TA02895C

Search articles by author

Spotlight

Advertisements