Jump to main content
Jump to site search

Issue 32, 2017
Previous Article Next Article

Phenyl and thienyl functionalized imidazolium iodides for highly efficient quasi-solid-state dye-sensitized solar cells

Author affiliations

Abstract

To enhance the ionic conductivity of imidazolium iodide based ionic conductors, the π conjugation of the imidazolium cation is expanded via N-substitution with aromatic groups of phenyl and thienyl. Three ionic conductors (ICs) of MPhII, MT2II and MT3II are designed and synthesized by linking benzene, 2-thiophene, and 3-thiophene to the imidazolium ring, respectively, and their single crystal structures are revealed. Quasi-solid-state electrolytes are prepared by solidifying the IC-containing solutions with SiO2 nanoparticles for quasi-solid-state dye-sensitized solar cells (QSS-DSSCs). The ionic conductivity of these quasi-solid-state electrolytes depends on the substituent and the substitution position as well, which correlates well with the distance between adjacent iodides, as revealed by the crystal packing structures. Owing to the highest conductivity among the three electrolytes, the QSS-DSSC with the MPhII based quasi-solid-state electrolyte achieves the highest power conversion efficiency of 8.36% under AM 1.5G sunlight (100 mW cm−2), which also exhibits good long-term stability under one sun soaking for more than 2000 h.

Graphical abstract: Phenyl and thienyl functionalized imidazolium iodides for highly efficient quasi-solid-state dye-sensitized solar cells

Back to tab navigation

Supplementary files

Publication details

The article was received on 31 May 2017, accepted on 18 Jul 2017 and first published on 18 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA04717G
Citation: J. Mater. Chem. A, 2017,5, 16976-16983
  •   Request permissions

    Phenyl and thienyl functionalized imidazolium iodides for highly efficient quasi-solid-state dye-sensitized solar cells

    M. Zhang, Z. Jin, C. Feng, M. Wang and Z. Wang, J. Mater. Chem. A, 2017, 5, 16976
    DOI: 10.1039/C7TA04717G

Search articles by author

Spotlight

Advertisements