Hou, Y., Syed, Z.A., Smith, R. orcid.org/0000-0002-7718-7796 et al. (5 more authors) (2016) Enhanced water splitting with silver decorated GaN photoelectrode. Journal of Physics D: Applied Physics, 49 (26). p. 265601. ISSN 0022-3727
Abstract
By means of a cost-effective approach, we demonstrate a GaN-based photoelectrode decorated with self-organized silver nano-islands employed for solar powered hydrogen generation, demonstrating 4 times increase in photocurrent compared with a reference sample without using any silver. Our photoelectrode exhibits a 60% incident photon-to-electron conversion efficiency. The enhanced hydrogen generation is attributed to a significantly increased carrier generation rate as a result of strongly localized electric fields induced by surface plasmon coupling effect. The silver coating also contributes to the good chemical stability of our photoelectrode in a strong alkali electrolyte. This work paves the way for the development of GaN and also InGaN based photoelectrodes with ultra-high solar hydrogen conversion efficiency.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 IOP Publishing. |
Keywords: | III-nitrides; water splitting; photoelectrode; surface plasmon |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/M015181/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/P006361/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Dec 2016 15:53 |
Last Modified: | 04 Aug 2017 14:20 |
Published Version: | http://doi.org/10.1088/0022-3727/49/26/265601 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/0022-3727/49/26/265601 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:109670 |