Effects of dye adsorption on the electron transport properties in ZnO-nanowire dye-sensitized solar cells
- 21 May 2007
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (21) , 213109
- https://doi.org/10.1063/1.2742639
Abstract
Mercurochrome and N3 dyes are employed to be the sensitizers in the ZnO-nanowire (NW) dye-sensitized solar cells(DSSCs). A lower fill factor is obtained in the N3-sensitized cell which results in comparable efficiencies in both ZnO-NW DSSCs although the N3 molecules possess a wider absorptive range for light harvesting. Electrochemical impedance spectroscopy and open-circuit photovoltage decay measurements are employed to investigate the electron transport properties in both ZnO-NW DSSCs. The results indicate that more abundant electron interfacial recombination occurs in the N3-sensitized ZnO-NW DSSC due to the higher surface trap density in the ZnO-NW photoanode after N3 dye adsorption.Keywords
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