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Tb 3+ and Yb 3+ codoped Lu 2 O 3 nanophosphors were synthesized by the reverse-strike co-precipitation method. The obtained Lu 2 O 3 :Tb 3+ ,Yb 3+ nanophosphors were characterized by X-ray diffraction (XRD) and photoluminescence (PL) spectra. The XRD results showed that all the prepared nanophosphors could be readily indexed to pure cubic...
Under 980 nm laser excitation, red emission ( 5 D 0 – 7 F J (J=0, 1, 2)) of Eu 3+ was observed in cubic Y 2 O 3 codoped with Eu 3+ and Yb 3+ . The dependence of the upconverted emission on doping concentration and laser power was studied. Yb 3+ emission around 1000 nm ( 2 F 5/2 – 2 F 7/2 ...
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