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Optical Properties of ZnO Nanowires Decorated with Au Nanoparticles

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Abstract:

One of the key technologies in future optoelectronics is control of excitons in oxide materials by the coupling with plasmons on noble metal surfaces. Optical properties of ZnO nanowires decorated with Au nanoparticles were studied to understand fundamental mechanism of the coupling and to develop optoelectronic devices with new functionalities. Light intensity at the main peak position in the photoluminescence (PL) spectra of ZnO nanowires was enhanced with the coverage of Au nanoparticles. Lifetime of excitons excited optically decreased by the decoration of Au nanoparticles. Understanding of the coupling between excitons and plasmons leads to optical control of excitons and will pave the way for new type of optoelectronic devices.

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Periodical:

Key Engineering Materials (Volume 547)

Pages:

7-10

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.547.7

Citation:

Cite this paper

Online since:

April 2013

Authors:

Makoto Sakurai, Ke Wei Liu, Romain Ceolato, Masakazu Aono

Keywords:

Au Nanoparticles, Exciton, Nanowire, Photoluminescence (PL), Plasmon, Zinc Oxide (ZnO)

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