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

Research output: Contribution to journalArticle

188 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 Jun 1

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nanowires
solar cells
transport properties
dyes
adsorption
electrons
photovoltages
traps
impedance
decay
cells
spectroscopy
molecules

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

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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.",
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Effects of dye adsorption on the electron transport properties in ZnO-nanowire dye-sensitized solar cells. / Wu, Jih Jen; Chen, Guan Ren; Yang, Hung Hsien; Ku, Chen Hao; Lai, Jr Yuan.

In: Applied Physics Letters, Vol. 90, No. 21, 213109, 01.06.2007.

Research output: Contribution to journalArticle

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AU - Wu, Jih Jen

AU - Chen, Guan Ren

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AU - Lai, Jr Yuan

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