Upconversion luminescence of the KLaF4:Er3+/Yb3+ nanocrystals doped with Na+ - Details

author：

Zhou, H.-F. (Zhou, H.-F..) ^[1] (Scholars：周海芳) | Wang, X.-C. (Wang, X.-C..) ^[2] | Zheng, Q. (Zheng, Q..) ^[3] (Scholars：郑巧) | Cheng, S.-Y. (Cheng, S.-Y..) ^[4] (Scholars：程树英) | Lai, Y.-F. (Lai, Y.-F..) ^[5] (Scholars：赖云锋)

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Scopus PKU CSCD

Abstract：

Hexagonal　KLaF4:Er3+/Yb3+　nanocrystals　(NCs)　doped　with　Na+　were　synthesized　by　hydrothermal　process　using　ethylenediamine　as　complexing　agent.　The　samples　were　characterized　by　X-ray　diffraction　(XRD),　transmission　electron　microscopy　(TEM)　and　Fourier　transform　infrared　(FT-IR)　spectra,　respectively.　The　upconversion　(UC)　emission　spectra　and　fluorescent　decay　of　4F9/2　level　for　samples　were　observed　under　excitation　by　a　near　infrared　laser　diode　at　980　nm.　The　upconversion　emission　intensity　was　significantly　enhanced　by　introducing　different　concentrations　of　Na+,　the　green　and　red　UC　maxium　emission　intensities　of　the　NCs　doped　with　Na+　were　enhanced　by　about　7.3　and　5.2　times,　in　comparison　with　that　of　the　Na+　-free　NCs,　respectively.　The　luminescence　enhancement　should　be　attributed　to　the　distortion　of　the　local　asymmetry　around　Er3+　and　the　decreasing　organic　ligands　on　the　surface　of　the　sample.　It　was　discussed　that　the　fluorescent　lifetime　of　samples　doped　with　Na+　ions　were　lower　than　that　of　the　Na+-free　sample.　©　2016,　Chinese　Ceramic　Society.　All　right　reserved.

Keyword：

Hydrothermal method; KLaF4 nanocrystal; Na+ doping; Upconversion luminescence

Community：

[ 1 ] [Zhou, H.-F.]Institute of Mico-nano Devices and Solar Cells, College of Physics and Information Engineering, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Zhou, H.-F.]Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou, 213164, China
[ 3 ] [Wang, X.-C.]Institute of Mico-nano Devices and Solar Cells, College of Physics and Information Engineering, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Wang, X.-C.]Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou, 213164, China
[ 5 ] [Zheng, Q.]Institute of Mico-nano Devices and Solar Cells, College of Physics and Information Engineering, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Zheng, Q.]Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou, 213164, China
[ 7 ] [Cheng, S.-Y.]Institute of Mico-nano Devices and Solar Cells, College of Physics and Information Engineering, Fuzhou University, Fuzhou, 350116, China
[ 8 ] [Cheng, S.-Y.]Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou, 213164, China
[ 9 ] [Lai, Y.-F.]Institute of Mico-nano Devices and Solar Cells, College of Physics and Information Engineering, Fuzhou University, Fuzhou, 350116, China
[ 10 ] [Lai, Y.-F.]Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou, 213164, China

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Source ：

Journal of Synthetic Crystals

ISSN： 1000-985X

CN： 11-2637/O7

Year： 2016

Issue： 4

Volume： 45

Page： 886-891

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

Affiliated Colleges：

物理与信息工程学院、微电子学院本学院/部未明确归属的数据

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