Enhanced photoelectrochemical performance of ZnO electrodes sensitized with N-719

Keita Kakiuchi; Eiji Hosono; Shinobu Fujihara

doi:10.1016/j.jphotochem.2005.07.018

Enhanced photoelectrochemical performance of ZnO electrodes sensitized with N-719

Keita Kakiuchi, Eiji Hosono, Shinobu Fujihara

Department of Applied Chemistry

Research output: Contribution to journal › Article

213 Citations (Scopus)

Abstract

To improve dye-loading in photoanodes, microstructure of ZnO films was modified through the formation and pyrolysis of layered hydroxide zinc acetate (LHZA) grown in a methanolic solution of zinc acetate dihydrate. Appropriate annealing treatments for the films led to the formation of mesoporous microstructure with an average pore diameter of 12 nm. It was demonstrated that loading of N-719 in the ZnO films was successful without influence of protons in solutions, as evidenced by a large dye amount of 1.4 × 10^-7 mol/cm², and hence a high short-circuit photocurrent density of 12.6 mA/cm². Sandwich-type dye-sensitized solar cells using the present ZnO/N-719 photoanode exhibited a conversion efficiency as high as 4.1% (AM-1.5, 100 mW/cm²).

Original language	English
Pages (from-to)	81-86
Number of pages	6
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	179
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jphotochem.2005.07.018
Publication status	Published - 2006 Apr 1

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Keywords

Conversion efficiency
Dye-sensitized solar cells
Microstructure
N-719
Zinc oxide

ASJC Scopus subject areas

Bioengineering
Physical and Theoretical Chemistry

Cite this

Kakiuchi, K., Hosono, E., & Fujihara, S. (2006). Enhanced photoelectrochemical performance of ZnO electrodes sensitized with N-719. Journal of Photochemistry and Photobiology A: Chemistry, 179(1-2), 81-86. https://doi.org/10.1016/j.jphotochem.2005.07.018

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abstract = "To improve dye-loading in photoanodes, microstructure of ZnO films was modified through the formation and pyrolysis of layered hydroxide zinc acetate (LHZA) grown in a methanolic solution of zinc acetate dihydrate. Appropriate annealing treatments for the films led to the formation of mesoporous microstructure with an average pore diameter of 12 nm. It was demonstrated that loading of N-719 in the ZnO films was successful without influence of protons in solutions, as evidenced by a large dye amount of 1.4 × 10-7 mol/cm2, and hence a high short-circuit photocurrent density of 12.6 mA/cm2. Sandwich-type dye-sensitized solar cells using the present ZnO/N-719 photoanode exhibited a conversion efficiency as high as 4.1% (AM-1.5, 100 mW/cm2).",

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N2 - To improve dye-loading in photoanodes, microstructure of ZnO films was modified through the formation and pyrolysis of layered hydroxide zinc acetate (LHZA) grown in a methanolic solution of zinc acetate dihydrate. Appropriate annealing treatments for the films led to the formation of mesoporous microstructure with an average pore diameter of 12 nm. It was demonstrated that loading of N-719 in the ZnO films was successful without influence of protons in solutions, as evidenced by a large dye amount of 1.4 × 10-7 mol/cm2, and hence a high short-circuit photocurrent density of 12.6 mA/cm2. Sandwich-type dye-sensitized solar cells using the present ZnO/N-719 photoanode exhibited a conversion efficiency as high as 4.1% (AM-1.5, 100 mW/cm2).

AB - To improve dye-loading in photoanodes, microstructure of ZnO films was modified through the formation and pyrolysis of layered hydroxide zinc acetate (LHZA) grown in a methanolic solution of zinc acetate dihydrate. Appropriate annealing treatments for the films led to the formation of mesoporous microstructure with an average pore diameter of 12 nm. It was demonstrated that loading of N-719 in the ZnO films was successful without influence of protons in solutions, as evidenced by a large dye amount of 1.4 × 10-7 mol/cm2, and hence a high short-circuit photocurrent density of 12.6 mA/cm2. Sandwich-type dye-sensitized solar cells using the present ZnO/N-719 photoanode exhibited a conversion efficiency as high as 4.1% (AM-1.5, 100 mW/cm2).

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10.1016/j.jphotochem.2005.07.018