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- W2733348718 abstract "The Er3+ and Yb3+ co-doped Sc2O3 nanoparticles were prepared by co-precipitation method. The phase structure and up-conversion properties were investigated using XRD, FESEM and up-conversion spectra. The nanoparticles with the size of about 40 nm emitted red and green light. Yb3+ ions are crucial to adjust the intensity proportion of red and green emission as a sensitizer. In Er3+, Yb3+ co-doping samples, the red emissions are much higher than green and the intensity ratio is up to 56.43, while the green to red intensity ratio is 11.21 with Er3+ single doping, which both show excellent mono-chromaticity. Strong red emissions are attributed to the cross-relaxation energy transfer and energy back-transfer processes. High Yb3+ ions concentrations induce the red up-conversion saturation, resulting in a near linear laser power dependence, and it can be illustrated based on steady-state rate equations." @default.
- W2733348718 created "2017-07-14" @default.
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- W2733348718 date "2017-10-01" @default.
- W2733348718 modified "2023-10-03" @default.
- W2733348718 title "Luminescence spectroscopy and near-infrared to visible upconversion in Er3+ and Yb3+ codoped Sc2O3 nanoparticles" @default.
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- W2733348718 doi "https://doi.org/10.1016/j.materresbull.2017.06.038" @default.
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