Photoelectrochemical behavior of compact and inverse opal tungsten trioxide films: Surface area and charge transfer properties

Yun Ok Kim; Seung-Ho Yu; Kwang Soon Ahn; Sang Kwon Lee; Soon Hyung Kang

doi:10.1149/2.0411507jes

Photoelectrochemical behavior of compact and inverse opal tungsten trioxide films: Surface area and charge transfer properties

Yun Ok Kim, Seung-Ho Yu, Kwang Soon Ahn, Sang Kwon Lee, Soon Hyung Kang

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

4 Citations (Scopus)

Abstract

A compact and nanoporous structured WO₃ film was prepared by electrodeposition. For a nanoporous structured WO₃ film, polystyrene (PS) beads with a size of 320 nm were used as the template. The PS beads were completely removed by the thermal treatment, affording inverse opal WO₃ films. For the inverse opalWO₃ film (1 min), the highest photocurrent density (1.75 mA/cm² at 1.5 V versus sat. Ag/AgCl) was achieved and exhibited a superior PEC performance, up to ∼46% compared to the compact WO₃ film.

Original language	English
Pages (from-to)	H449-H452
Journal	Journal of the Electrochemical Society
Volume	162
Issue number	7
DOIs	https://doi.org/10.1149/2.0411507jes
Publication status	Published - 2015 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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title = "Photoelectrochemical behavior of compact and inverse opal tungsten trioxide films: Surface area and charge transfer properties",

abstract = "A compact and nanoporous structured WO3 film was prepared by electrodeposition. For a nanoporous structured WO3 film, polystyrene (PS) beads with a size of 320 nm were used as the template. The PS beads were completely removed by the thermal treatment, affording inverse opal WO3 films. For the inverse opalWO3 film (1 min), the highest photocurrent density (1.75 mA/cm2 at 1.5 V versus sat. Ag/AgCl) was achieved and exhibited a superior PEC performance, up to ∼46% compared to the compact WO3 film.",

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AU - Kim, Yun Ok

AU - Yu, Seung-Ho

AU - Ahn, Kwang Soon

AU - Lee, Sang Kwon

AU - Kang, Soon Hyung

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N2 - A compact and nanoporous structured WO3 film was prepared by electrodeposition. For a nanoporous structured WO3 film, polystyrene (PS) beads with a size of 320 nm were used as the template. The PS beads were completely removed by the thermal treatment, affording inverse opal WO3 films. For the inverse opalWO3 film (1 min), the highest photocurrent density (1.75 mA/cm2 at 1.5 V versus sat. Ag/AgCl) was achieved and exhibited a superior PEC performance, up to ∼46% compared to the compact WO3 film.

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