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

Chen Hao Ku; Jih Jen Wu

doi:10.1063/1.2778454

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

Chen Hao Ku, Jih Jen Wu

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

191 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 language	English
Article number	093117
Journal	Applied Physics Letters
Volume	91
Issue number	9
DOIs	https://doi.org/10.1063/1.2778454
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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title = "Electron transport properties in ZnO nanowire array/nanoparticle composite dye-sensitized solar cells",

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.",

author = "Ku, {Chen Hao} and Wu, {Jih Jen}",

note = "Funding Information: The authors gratefully thank Guan-Ren Chen and Hung-Hsien Yang for technical supports. Financial support from the National Science Council of Taiwan under Contract No. NSC-95-2221-E006-297 is gratefully acknowledged.",

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AU - Ku, Chen Hao

AU - Wu, Jih Jen

N1 - Funding Information: The authors gratefully thank Guan-Ren Chen and Hung-Hsien Yang for technical supports. Financial support from the National Science Council of Taiwan under Contract No. NSC-95-2221-E006-297 is gratefully acknowledged.

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Y1 - 2007

N2 - 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.

AB - 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.

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

Abstract

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