Localized surface plasmon enhanced photoluminescence of ZnO nanosheets by Au nanoparticles

Rizwan Khan; Periyayya Uthirakumar; Kang Bin Bae; See Jong Leem; In-Hwan Lee

doi:10.1016/j.matlet.2015.10.033

Localized surface plasmon enhanced photoluminescence of ZnO nanosheets by Au nanoparticles

Rizwan Khan, Periyayya Uthirakumar, Kang Bin Bae, See Jong Leem, In-Hwan Lee

Research output: Contribution to journal › Article

26 Citations (Scopus)

Abstract

ZnO nanosheets were synthesized by a facile low temperature hydrothermal method and the Au nanoparticles were decorated on the surface of ZnO nanosheets by an in-situ solution method. The ZnO nanostructures had sheet-like morphology with relatively uniform size and possessed high crystallinity. The average diameter of Au nanoparticles decorated on the ZnO nanosheets was around 10-20 nm. The ultraviolet emission from Au decorated ZnO nanosheets was greatly enhanced and the green emission was significantly suppressed compared with the bare ZnO nanosheets. This excellent photoluminescence performance was attributable to the surface-plasmon-mediated sequential transfer of defect energy from ZnO to Au and electron transfer from excited Au to ZnO.

Original language	English
Article number	19689
Pages (from-to)	8-11
Number of pages	4
Journal	Materials Letters
Volume	163
DOIs	https://doi.org/10.1016/j.matlet.2015.10.033
Publication status	Published - 2016 Jan 15
Externally published	Yes

Keywords

Localized surface plasmons
Nanosheets
Photoluminescence
ZnO

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Khan, R., Uthirakumar, P., Bae, K. B., Leem, S. J., & Lee, I-H. (2016). Localized surface plasmon enhanced photoluminescence of ZnO nanosheets by Au nanoparticles. Materials Letters, 163, 8-11. [19689]. https://doi.org/10.1016/j.matlet.2015.10.033

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AU - Bae, Kang Bin

AU - Leem, See Jong

AU - Lee, In-Hwan

PY - 2016/1/15

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N2 - ZnO nanosheets were synthesized by a facile low temperature hydrothermal method and the Au nanoparticles were decorated on the surface of ZnO nanosheets by an in-situ solution method. The ZnO nanostructures had sheet-like morphology with relatively uniform size and possessed high crystallinity. The average diameter of Au nanoparticles decorated on the ZnO nanosheets was around 10-20 nm. The ultraviolet emission from Au decorated ZnO nanosheets was greatly enhanced and the green emission was significantly suppressed compared with the bare ZnO nanosheets. This excellent photoluminescence performance was attributable to the surface-plasmon-mediated sequential transfer of defect energy from ZnO to Au and electron transfer from excited Au to ZnO.

AB - ZnO nanosheets were synthesized by a facile low temperature hydrothermal method and the Au nanoparticles were decorated on the surface of ZnO nanosheets by an in-situ solution method. The ZnO nanostructures had sheet-like morphology with relatively uniform size and possessed high crystallinity. The average diameter of Au nanoparticles decorated on the ZnO nanosheets was around 10-20 nm. The ultraviolet emission from Au decorated ZnO nanosheets was greatly enhanced and the green emission was significantly suppressed compared with the bare ZnO nanosheets. This excellent photoluminescence performance was attributable to the surface-plasmon-mediated sequential transfer of defect energy from ZnO to Au and electron transfer from excited Au to ZnO.

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