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Using scanning electrochemical microscopy to examine copper(I) sensitizers for dye-sensitized solar cells
journal contribution
posted on 2017-06-16, 13:16 authored by Colin J. Martin, Biljana Bozic-Weber, Edwin C. Constable, Thilo Glatzel, Catherine E. Housecroft, Iain WrightThe examination of surface charges within dye-sensitized solar cells containing copper(I)-based dyes has proved to be difficult due to the instability of these systems compared with existing commercial dyes. We report the use of scanning electrochemical microscopy in a setup in which homoleptic [Cu(Lancillary)2]+ complexes are used as the electrolyte to investigate a series of [Cu(Lanchor)(L ancillary)]+ sensitizers. The ligands Lanchor and Lancillary are 6,6′-disubstituted 2,2′-bipyridines. By incorporating sensitizers and electrolytes containing the same ligands, changes in the diffusion layer around the scanning electrode have been used to map the substrate surface both in the dark and under controlled illumination. Examination of the changes in current as a constant potential is applied shows the formation of stable surface charge as the cell components equilibrate. Comparison of the time taken for this stabilization to occur as ancillary or anchoring ligands within the dye and electrolyte are varied shows a significant dependence upon the aliphatic substituents in the 6,6′-positions of the ligands that surround the copper(I) center. © 2014 American Chemical Society.
Funding
We thank the European Research Council (Advanced Grant 267816 LiLo), the Swiss National Science Foundation, the Nano Argovia programme of the Swiss Nanoscience Institute, and the University of Basel for financial support.
History
School
- Science
Department
- Chemistry
Published in
Journal of Physical Chemistry CVolume
118Issue
30Pages
16912 - 16918Citation
MARTIN, C.J. ...et al., 2014. Using scanning electrochemical microscopy to examine copper(I) sensitizers for dye-sensitized solar cells. Journal of Physical Chemistry C, 118(30), pp. 16912-16918.Publisher
© American Chemical SocietyVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2014Notes
This paper is in closed access.ISSN
1932-7447eISSN
1932-7455Publisher version
Language
- en