Mohammed A. Ibrahem
Plasmons Enhancing Sub-Bandgap Photoconductivity in TiO<inf>2</inf> Nanoparticles Film
Ibrahem, Mohammed A.; Verrelli, Emanuele; Adawi, Ali M.; Bouillard, Jean Sebastien G.; O’Neill, Mary
Authors
Dr Emanuele Verrelli E.Verrelli@hull.ac.uk
Lecturer in Physics, Director of Postgraduate Researchers, Seminar organiser, First aider
Dr Ali Adawi A.Adawi@hull.ac.uk
Reader in Physics
Dr Jean-Sebastien Bouillard J.Bouillard@hull.ac.uk
Senior Lecturer in Physics and Nanotechnology
Mary O’Neill
Abstract
The coupling between sub-bandgap defect states and surface plasmon resonances in Au nanoparticles and its effects on the photoconductivity performance of TiO2 are investigated in both the ultraviolet (UV) and visible spectrum. Incorporating a 2 nm gold nanoparticle layer in the photodetector device architecture creates additional trapping pathways, resulting in a faster current decay under UV illumination and a significant enhancement in the visible photocurrent of TiO2, with an 8-fold enhancement of the defects-related photocurrent. We show that hot electron injection (HEI) and plasmonic resonance energy transfer (PRET) jointly contribute to the observed photoconductivity enhancement. In addition to shedding light on the below-band-edge photoconductivity of TiO2, our work provides insight into new methods to probe and examine the surface defects of metal oxide semiconductors using plasmonic resonances.
Citation
Ibrahem, M. A., Verrelli, E., Adawi, A. M., Bouillard, J. S. G., & O’Neill, M. (2024). Plasmons Enhancing Sub-Bandgap Photoconductivity in TiO2 Nanoparticles Film. ACS Omega, 9(9), 10169–10176. https://doi.org/10.1021/acsomega.3c06932
Journal Article Type | Article |
---|---|
Acceptance Date | Jan 24, 2024 |
Online Publication Date | Feb 20, 2024 |
Publication Date | Mar 5, 2024 |
Deposit Date | Mar 26, 2024 |
Publicly Available Date | Mar 27, 2024 |
Journal | ACS Omega |
Print ISSN | 2470-1343 |
Electronic ISSN | 2470-1343 |
Publisher | American Chemical Society |
Peer Reviewed | Peer Reviewed |
Volume | 9 |
Issue | 9 |
Pages | 10169–10176 |
DOI | https://doi.org/10.1021/acsomega.3c06932 |
Keywords | Analytical apparatus; Metal nanoparticles; Oxides; Photonics; Plasmonics |
Public URL | https://hull-repository.worktribe.com/output/4577600 |
Files
Published article
(4.5 Mb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0
Copyright Statement
Copyright © 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0.
You might also like
Enhanced Switching in Solid Polymer Electrolyte Memristor Devices via the addition of Interfacial Barriers and Quantum Dots
(2023)
Presentation / Conference Contribution
Impact of Surface Ligand on the Biocompatibility of InP/ZnS Quantum Dots with Platelets
(2023)
Journal Article
Long-Range and High-Efficiency Plasmon-Assisted Förster Resonance Energy Transfer
(2023)
Journal Article
Downloadable Citations
About Repository@Hull
Administrator e-mail: repository@hull.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search