Plasmonic enhancement in BiVO4 photonic crystals for efficient water splitting

Liwu Zhang, Chia Yu Lin, Ventsislav K. Valev, Erwin Reisner, Ullrich Steiner, Jeremy J. Baumberg

研究成果: Article同行評審

156 引文 斯高帕斯(Scopus)

摘要

Photo-electrochemical water splitting is a very promising and environmentally friendly route for the conversion of solar energy into hydrogen. However, the solar-to-H2 conversion efficiency is still very low due to rapid bulk recombination of charge carriers. Here, a photonic nano-architecture is developed to improve charge carrier generation and separation by manipulating and confining light absorption in a visible-light-active photoanode constructed from BiVO4 photonic crystal and plasmonic nanostructures. Synergistic effects of photonic crystal stop bands and plasmonic absorption are observed to operate in this photonic nanostructure. Within the scaffold of an inverse opal photonic crystal, the surface plasmon resonance is significantly enhanced by the photonic Bragg resonance. Nanophotonic photoanodes show AM 1.5 photocurrent densities of 3.1 ± 0.1 mA cm-2 at 1.23 V versus RHE, which is among the highest for oxide-based photoanodes and over 4 times higher than the unstructured planar photoanode.

原文English
頁(從 - 到)3970-3978
頁數9
期刊Small
10
發行號19
DOIs
出版狀態Published - 2014 10月 1

All Science Journal Classification (ASJC) codes

  • 生物技術
  • 生物材料
  • 一般化學
  • 一般材料科學

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