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 journalArticle

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 languageEnglish
Pages (from-to)H449-H452
JournalJournal of the Electrochemical Society
Volume162
Issue number7
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes

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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