Upconversion luminescence of colloidal solution of Y2O3 nano-particles doped with trivalent rare-earth ions |
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| Authors: | Daisuke Matsuura Tatsuya Ikeuchi |
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| Institution: | a Research and Development Center, Dai Nippon Printing Co., Ltd., 250-1 Wakashiba, Kashiwa 277-0871, Japan
b Department of Materials Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan |
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| Abstract: | We have studied upconversion luminescence of colloidal solution of Y2O3 nano-particles codoped with 1 mol% Er3+ and 5 mol% Yb3+. Y2O3 nano-particles codoped with 1 mol% Er3+ and 5 mol% Yb3+ show sintering and agglomeration, because they are synthesized by firing a hydroxy carbonate precursor. Colloidal solution of Y2O3 nano-particles codoped with 1 mol% Er3+ and 5 mol% Yb3+ is prepared through two-step dispersion process and the average diameter of the primary nano-particles is about 50 nm. Under excitation with 980-nm laser diode, upconversion luminescence of colloidal solution of the primary Y2O3 nano-particles codoped with 1 mol% Er3+ and 5 mol% Yb3+ in methyl isobuthyl ketone strongly appeared near 660 nm and weakly near 550 nm. |
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| Keywords: | Upconversion luminescence Colloidal solution Nano-particle |
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