Enhanced plasmonic photoelectrochemical response of Au sandwiched WO3 photoanodes

Kim Hang Ng, Lorna Jeffery Minggu, Nurul Akmal Jaafar, Khuzaimah Arifin, Mohammad Bin Kassim

Research output: Contribution to journalArticle

  • 2 Citations

Abstract

Herein we present a plasmonic sandwich photoelectrode design utilizing Au nanoparticles and WO3 for the photoelectrochemical process. The plasmonic layer of Au nanoparticles was electrodeposited onto WO3 photoanodes in different configurations to enhance the photocurrent generation of the WO3 photoanodes during photoelectrochemical reaction. The photoanodes were characterized by field emission scanning electron microscopy (FESEM), UV–Vis spectroscopy and photoelectrochemical analysis. It is found that the photoanodes with plasmonic layers showed a higher photocurrent density in comparison to pristine WO3. The improvement in photocurrent generation can be attributed to the plasmonic effect from the Au nanoparticles. Furthermore, the Au/WO3/Au photoanode generated the highest photocurrent among the samples at high bias potential. However, based on the ABPE conversion efficiency, the plasmonic Au as surface layer is the most promising configuration as photoanode.

LanguageEnglish
Pages361-367
Number of pages7
JournalSolar Energy Materials and Solar Cells
Volume172
DOIs
StatePublished - 1 Dec 2017

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Photocurrents
Nanoparticles
Ultraviolet spectroscopy
Field emission
Conversion efficiency
Scanning electron microscopy

Keywords

  • Au nanoparticles
  • Photocurrent generation
  • Photoelectrochemical
  • Plasmonic

ASJC Scopus subject areas

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

Cite this

Enhanced plasmonic photoelectrochemical response of Au sandwiched WO3 photoanodes. / Ng, Kim Hang; Jeffery Minggu, Lorna; Jaafar, Nurul Akmal; Arifin, Khuzaimah; Kassim, Mohammad Bin.

In: Solar Energy Materials and Solar Cells, Vol. 172, 01.12.2017, p. 361-367.

Research output: Contribution to journalArticle

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AU - Kassim,Mohammad Bin

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