Journal article
The plasmonic properties of argon cluster-bombarded InP surfaces
BJ Murdoch, AJ Barlow, IW Fletcher, PJ Cumpson
Applied Physics Letters | AMER INST PHYSICS | Published : 2017
DOI: 10.1063/1.4993535
Abstract
Gas cluster ion beam sputtering has been used to study the self-organising behaviour of In metallic nanoparticles produced by preferential sputtering of phosphorus atoms in InP. Discrete plasmonic In nanoparticles are observed at the earliest stages of surface modification. The surfaces have been investigated in situ by reflection electron energy loss spectroscopy, Auger electron spectroscopy, and photoluminescence spectroscopy. By altering the excitation intensity, we observe alterations of the photoluminescence spectrum that are attributed to photoconductive-coupling between In nanoparticles. The devices presented are suitable for visible wavelength surface enhanced Raman spectroscopy and,..
View full abstractGrants
Awarded by Thermo Scientific
Funding Acknowledgements
The authors gratefully acknowledge funding from the EPSRC. The Thermo Scientific Theta Probe used for experiments in this letter is housed at the National EPSRC XPS Users' Service, an EPSRC Mid-Range Facility. The HIM was purchased as part of a package funded by EPSRC's "Great Eight" capital funding Grant No. EP/K022679/1 and Newcastle University. The authors also gratefully acknowledge Mike Foster for his assistance in collecting HIM images.