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Transparent Metal Selenide Alloy Counter Electrodes for High-Efficiency Bifacial Dye-Sensitized Solar Cells.
- Source :
-
Angewandte Chemie . Dec2014, Vol. 126 Issue 52, p14797-14802. 6p. - Publication Year :
- 2014
-
Abstract
- The exploration of cost-effective and transparent counter electrodes (CEs) is a persistent objective in the development of bifacial dye-sensitized solar cells (DSSCs). Transparent counter electrodes based on binary-alloy metal selenides (M-Se; M=Co, Ni, Cu, Fe, Ru) are now obtained by a mild, solution-based method and employed in efficient bifacial DSSCs. Owing to superior charge-transfer ability for the Iā/I3ā redox couple, electrocatalytic activity toward I3ā reduction, and optical transparency, the bifacial DSSCs with CEs consisting of a metal selenide alloy yield front and rear efficiencies of 8.30 % and 4.63 % for Co0.85Se, 7.85 % and 4.37 % for Ni0.85Se, 6.43 % and 4.24 % for Cu0.50Se, 7.64 % and 5.05 % for FeSe, and 9.22 % and 5.90 % for Ru0.33Se in comparison with 6.18 % and 3.56 % for a cell with an electrode based on pristine platinum, respectively. Moreover, fast activity onset, high multiple start/stop capability, and relatively good stability demonstrate that these new electrodes should find applications in solar panels. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00448249
- Volume :
- 126
- Issue :
- 52
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 100012476
- Full Text :
- https://doi.org/10.1002/ange.201409422