Abstract
We investigate the optical and morphological effects of silver island films exposed to atmosphere. Silver nanoparticles with an average radius below 5 nm were highly tarnished after one week, showing significant morphological changes. Using x-ray photoelectron spectroscopy we demonstrate that the tarnishing is predominantly caused by oxidation and not sulfidation for exposed silver nanostructures under normal conditions. Post-deposition annealing of tarnished nanoparticle films results in further morphological changes which are highly dependent on the exposure time and nominal film thickness. Our results suggest that the size and density of the nanoparticles can be pre-designed by controlling the deposition thickness, tarnishing and annealing. The processing causes a red-shift in the localized surface plasmon resonance due to reduced particle interactions.
| Original language | English |
|---|---|
| Article number | 145308 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 46 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2013 Apr 10 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films
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The effect of atmospheric tarnishing on the optical and structural properties of silver nanoparticles. / Oates, T. W H; Losurdo, M.; Noda, Suguru; Hinrichs, K.
In: Journal of Physics D: Applied Physics, Vol. 46, No. 14, 145308, 10.04.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The effect of atmospheric tarnishing on the optical and structural properties of silver nanoparticles
AU - Oates, T. W H
AU - Losurdo, M.
AU - Noda, Suguru
AU - Hinrichs, K.
PY - 2013/4/10
Y1 - 2013/4/10
N2 - We investigate the optical and morphological effects of silver island films exposed to atmosphere. Silver nanoparticles with an average radius below 5 nm were highly tarnished after one week, showing significant morphological changes. Using x-ray photoelectron spectroscopy we demonstrate that the tarnishing is predominantly caused by oxidation and not sulfidation for exposed silver nanostructures under normal conditions. Post-deposition annealing of tarnished nanoparticle films results in further morphological changes which are highly dependent on the exposure time and nominal film thickness. Our results suggest that the size and density of the nanoparticles can be pre-designed by controlling the deposition thickness, tarnishing and annealing. The processing causes a red-shift in the localized surface plasmon resonance due to reduced particle interactions.
AB - We investigate the optical and morphological effects of silver island films exposed to atmosphere. Silver nanoparticles with an average radius below 5 nm were highly tarnished after one week, showing significant morphological changes. Using x-ray photoelectron spectroscopy we demonstrate that the tarnishing is predominantly caused by oxidation and not sulfidation for exposed silver nanostructures under normal conditions. Post-deposition annealing of tarnished nanoparticle films results in further morphological changes which are highly dependent on the exposure time and nominal film thickness. Our results suggest that the size and density of the nanoparticles can be pre-designed by controlling the deposition thickness, tarnishing and annealing. The processing causes a red-shift in the localized surface plasmon resonance due to reduced particle interactions.
UR - http://www.scopus.com/inward/record.url?scp=84875331673&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875331673&partnerID=8YFLogxK
U2 - 10.1088/0022-3727/46/14/145308
DO - 10.1088/0022-3727/46/14/145308
M3 - Article
VL - 46
JO - Journal Physics D: Applied Physics
JF - Journal Physics D: Applied Physics
SN - 0022-3727
IS - 14
M1 - 145308
ER -