Electron transport properties in ZnO nanowire array/nanoparticle composite dye-sensitized solar cells

Chen Hao Ku, Jih Jen Wu

Research output: Contribution to journalArticlepeer-review

176 Citations (Scopus)

Abstract

A significant improvement of the efficiency of the ZnO nanowire (NW) dye-sensitized solar cell (DSSC) has been achieved by the chemical bath deposition of the dense nanoparticles (NPs) within the interstices of the vertical ZnO-NW anode. Impedance analyses of the electron transports in DSSCs reveal that the effective diffusion coefficient of an electron in the ZnO-NW array/NP composite anode falls between those in the ZnO-NW and Ti O2 -NP anodes. The superior performance of the ZnO-NW array/NP composite DSSC to the ZnO-NW cell is mainly ascribed to the enrichment of the light harvesting without significantly sacrificing the electron transport efficiency.

Original languageEnglish
Article number093117
JournalApplied Physics Letters
Volume91
Issue number9
DOIs
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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