Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 7, Issue 20, Pages 4137-4141Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.6b01884
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- Australian Centre for Advanced Photovoltaics
- Australian Renewable Energy Agency
- Victorian State Government (DBI-VSA)
- Victorian State Government (DPI-ETIS)
- Commonwealth Scientific and Industrial Research Organization
- ARC [LF100100117]
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Gold nanoparticles located at a metal oxide/hole conductor interface generate photocurrents upon visible light illumination. We demonstrate that the quantum efficiency of this process depends on the nanoparticle size. Gold nanoparticles (5 nm) show a maximum absorbed photon-to-electron conversion efficiency (APCE) of 13.3%. For increasing particle sizes, the average APCE decreases to 3.3% for the largest particles (40 nm) investigated. Three possible causes for this efficiency change are discussed.
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