Effects of dye adsorption on the electron transport properties in ZnO-nanowire dye-sensitized solar cells

Jih Jen Wu, Guan Ren Chen, Hung Hsien Yang, Chen Hao Ku, Jr Yuan Lai

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191 Citations (Scopus)

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.

Original languageEnglish
Article number213109
JournalApplied Physics Letters
Volume90
Issue number21
DOIs
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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