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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 10–20nm. 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.
School of Advanced Materials Engineering and Research Center of Advanced Materials Development, Chonbuk National University, Jeonju 561-756, South Korea
School of Advanced Materials Engineering and Research Center of Advanced Materials Development, Chonbuk National University, Jeonju 561-756, South Korea
Nanoscience Center for Optoelectronic and Energy Devices, Department of Science, Sona College of Technology, Salem 636005, Tamilnadu, India
School of Advanced Materials Engineering and Research Center of Advanced Materials Development, Chonbuk National University, Jeonju 561-756, South Korea