Hydrothermal synthesis and the enhanced blue upconversion luminescence of NaYF4:Nd3+,Tm3+,Yb3+ |
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| Authors: | Jiayue Sun Weihang Zhang Haiyan Du Zhiping Yang |
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| Affiliation: | 1. College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China;2. State Key Laboratory of Materials-Orient Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China;3. College of Chemistry & Materials Engineering, Changshu Institute of Technology, Changshu 215500, Jiangsu, PR China;1. State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;2. School of Physics, Shandong University, Jinan 250100, China;3. School of Energy and Power Engineering, Shandong University, Jinan 250061, China;1. College of Electronic and Electrical Engineering, Chuzhou University, Anhui 239000, PR China;2. College of Mechanical and Automotive Engineering, Chuzhou University, Anhui 239000, PR China;1. College of Computer and Information Science, Chongqing Normal University, Chongqing 400047, China;2. Institute of Computational Chemistry, Chongqing Normal University, Chongqing 400047, China |
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| Abstract: | Nd3+, Tm3+ and Yb3+ co-doped NaYF4 upconversion (UC) material was synthesized by the hydrothermal method. The structure of the sample was characterized by the X-ray diffraction, and its UC luminescence properties were investigated in detail. Under the 980 nm semiconductor laser excitation, its UC spectra exhibited distinct emission peaks at 451 nm, 475 nm and 646 nm respectively. On the basis of the comparison of UC spectra between NaYF4:Nd3+,Tm3+,Yb3+ and NaYF4:Tm3+,Yb3+, it was indicated that the existence of Nd3+ ion enhanced the blue emission intensity. The law of luminescence intensity versus pump power proved that the blue emission at 475 nm, and the red emission at 646 nm were the two-photon processes, while the blue emission at 451 nm was a three-photon process. |
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