Silver nanorod arrays for photocathode applications

Subramanian Vilayurganapathy, Manjula I. Nandasiri, Alan G. Joly, Patrick Z. El-Khoury, Tamas Varga, Greg Coffey, Birgit Schwenzer, Archana Pandey, Asghar Kayani, Wayne P. Hess, Suntharampillai Thevuthasan

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We explore the use of plasmonic Ag nanorod arrays featuring enhanced photoemission as high-brightness photocathode material. Silver nanorod arrays are synthesized by the direct current electrodeposition method and their dimensionality, uniformity, crystallinity, and oxide/impurity content are characterized. The yielded arrays exhibit greatly enhanced two-photon photoemission under 400 nm femtosecond pulsed laser excitation. Plasmonic field enhancement in the array produces photoemission hot spots that are mapped using photoemission electron microscopy. The relative photoemission enhancement of nanorod hot spots relative to that of a flat Ag thin film is found to range between 102 and 3 × 103.

Original languageEnglish
Article number161112
JournalApplied Physics Letters
Volume103
Issue number16
DOIs
Publication statusPublished - 14 Oct 2013
Externally publishedYes

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photocathodes
nanorods
photoelectric emission
silver
augmentation
electrodeposition
crystallinity
pulsed lasers
electron microscopy
brightness
direct current
impurities
oxides
photons
thin films
excitation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Vilayurganapathy, S., Nandasiri, M. I., Joly, A. G., El-Khoury, P. Z., Varga, T., Coffey, G., ... Thevuthasan, S. (2013). Silver nanorod arrays for photocathode applications. Applied Physics Letters, 103(16), [161112]. https://doi.org/10.1063/1.4825262

Silver nanorod arrays for photocathode applications. / Vilayurganapathy, Subramanian; Nandasiri, Manjula I.; Joly, Alan G.; El-Khoury, Patrick Z.; Varga, Tamas; Coffey, Greg; Schwenzer, Birgit; Pandey, Archana; Kayani, Asghar; Hess, Wayne P.; Thevuthasan, Suntharampillai.

In: Applied Physics Letters, Vol. 103, No. 16, 161112, 14.10.2013.

Research output: Contribution to journalArticle

Vilayurganapathy, S, Nandasiri, MI, Joly, AG, El-Khoury, PZ, Varga, T, Coffey, G, Schwenzer, B, Pandey, A, Kayani, A, Hess, WP & Thevuthasan, S 2013, 'Silver nanorod arrays for photocathode applications', Applied Physics Letters, vol. 103, no. 16, 161112. https://doi.org/10.1063/1.4825262
Vilayurganapathy S, Nandasiri MI, Joly AG, El-Khoury PZ, Varga T, Coffey G et al. Silver nanorod arrays for photocathode applications. Applied Physics Letters. 2013 Oct 14;103(16). 161112. https://doi.org/10.1063/1.4825262
Vilayurganapathy, Subramanian ; Nandasiri, Manjula I. ; Joly, Alan G. ; El-Khoury, Patrick Z. ; Varga, Tamas ; Coffey, Greg ; Schwenzer, Birgit ; Pandey, Archana ; Kayani, Asghar ; Hess, Wayne P. ; Thevuthasan, Suntharampillai. / Silver nanorod arrays for photocathode applications. In: Applied Physics Letters. 2013 ; Vol. 103, No. 16.
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