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
Authors/Creators: |
|
||||||
---|---|---|---|---|---|---|---|
Copyright, Publisher and Additional Information: | © 2016 IOP Publishing. | ||||||
Keywords: | III-nitrides; water splitting; photoelectrode; surface plasmon | ||||||
Dates: |
|
||||||
Institution: | The University of Sheffield | ||||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) | ||||||
Funding Information: |
|
||||||
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: | https://doi.org/10.1088/0022-3727/49/26/265601 |