Surface plasmon enhanced band edge luminescence of ZnO nanorods by capping Au nanoparticles

C. W. Cheng; E. J. Sie; B. Liu; C. H.A. Huan; T. C. Sum; H. D. Sun; H. J. Fan

doi:10.1063/1.3323091

Surface plasmon enhanced band edge luminescence of ZnO nanorods by capping Au nanoparticles

C. W. Cheng, E. J. Sie, B. Liu, C. H.A. Huan, T. C. Sum, H. D. Sun, H. J. Fan

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

274 Citations (Scopus)

Abstract

The author observe sixfold enhancement in the near band gap emission of ZnO nanorods by employing surface plasmon of Au nanoparticles, while the defect-related emission is completely suppressed. Time-resolved photoluminescence indicates that the decay process becomes much faster by Au capping. The remarkable enhancement of the ultraviolet emission intensities and transition rates is ascribed to the charge transfer and efficient coupling between ZnO nanorods and Au surface plasmons. The suppression of the green emission might be due to a combined effect of Au surface plasmon and passivation of the ZnO nanorod surface traps.

Original language	English
Article number	071107
Journal	Applied Physics Letters
Volume	96
Issue number	7
DOIs	https://doi.org/10.1063/1.3323091
Publication status	Published - 2010
Externally published	Yes

ASJC Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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title = "Surface plasmon enhanced band edge luminescence of ZnO nanorods by capping Au nanoparticles",

abstract = "The author observe sixfold enhancement in the near band gap emission of ZnO nanorods by employing surface plasmon of Au nanoparticles, while the defect-related emission is completely suppressed. Time-resolved photoluminescence indicates that the decay process becomes much faster by Au capping. The remarkable enhancement of the ultraviolet emission intensities and transition rates is ascribed to the charge transfer and efficient coupling between ZnO nanorods and Au surface plasmons. The suppression of the green emission might be due to a combined effect of Au surface plasmon and passivation of the ZnO nanorod surface traps.",

author = "Cheng, {C. W.} and Sie, {E. J.} and B. Liu and Huan, {C. H.A.} and Sum, {T. C.} and Sun, {H. D.} and Fan, {H. J.}",

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volume = "96",

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AU - Cheng, C. W.

AU - Sie, E. J.

AU - Liu, B.

AU - Huan, C. H.A.

AU - Sum, T. C.

AU - Sun, H. D.

AU - Fan, H. J.

PY - 2010

Y1 - 2010

N2 - The author observe sixfold enhancement in the near band gap emission of ZnO nanorods by employing surface plasmon of Au nanoparticles, while the defect-related emission is completely suppressed. Time-resolved photoluminescence indicates that the decay process becomes much faster by Au capping. The remarkable enhancement of the ultraviolet emission intensities and transition rates is ascribed to the charge transfer and efficient coupling between ZnO nanorods and Au surface plasmons. The suppression of the green emission might be due to a combined effect of Au surface plasmon and passivation of the ZnO nanorod surface traps.

AB - The author observe sixfold enhancement in the near band gap emission of ZnO nanorods by employing surface plasmon of Au nanoparticles, while the defect-related emission is completely suppressed. Time-resolved photoluminescence indicates that the decay process becomes much faster by Au capping. The remarkable enhancement of the ultraviolet emission intensities and transition rates is ascribed to the charge transfer and efficient coupling between ZnO nanorods and Au surface plasmons. The suppression of the green emission might be due to a combined effect of Au surface plasmon and passivation of the ZnO nanorod surface traps.

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Surface plasmon enhanced band edge luminescence of ZnO nanorods by capping Au nanoparticles

Abstract

ASJC Scopus Subject Areas

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