Special Issue — Advanced Materials Development and Performance for its Optimal Application; Guest Editor: Yun-Hae KimNo Access

Effect of spacer layer on enhancement and quenching of photoluminescence by surface plasmon

Dongyan Zhang

Advanced Electron Devices Laboratory, Toyota Technological Institute, Nagoya 468-8511, Japan

Corresponding author.

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and

Ri-Ichi Murakami

Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

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https://doi.org/10.1142/S0217984915400345Cited by:2 (Source: Crossref)

Abstract

Metal nanoparticles have the ability to localize and strongly enhance the incident electromagnetic field due to the surface plasmon polariton. The coupling between AuNPs and ZnO thin films affects their emission properties. In this study, we prepared the ZnO/Al₂O₃/AuNPs multilayer films, and investigated the effect of spacer layer on enhancement and quenching of photoluminescence by surface plasmon. The emission intensities of the thin films vary when Al₂O₃ space layer with different thickness was embedded in the ZnO/Au films, consistent with theoretical predictions. The photoluminescence modulation is also made via controlling the polarization of the excitation source. The photoluminescence anisotropy of these systems shows that enhanced photoluminescence can be achieved through coupling of the emission from ZnO with the surface plasmon resonance of AuNPs.

Keywords:

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