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- W2356223625 abstract "The 1 mol% Tm3+,1 mol% Tm3+ and 10 mol% Yb3+ co-doped Y2Ti2O7 powders were prepared by sol-gel method.The Tm3+ doped Y2Ti2O7 was composed of mixture of Y2Ti2O7 and tiny TiO2 phases.Yb3+ co-doping had no effect on the phase structure of Tm3+ doped Y2Ti2O7.The blue and infrared up-conversion emissions in the wavelength range of 430-500 nm and 620-750 nm were detected by a 980-nm semiconductor laser diode(LD) excitation,which corresponding to the 1G4→3H6 and 3H4→3H6 transitions of Tm3+.The up-conversion emissions intensity of Tm3+ doped Y2Ti2O7 powders was enhanced by Yb3+ co-doping.The up-conversion emissions intensity of Tm3+-Yb3+ co-doped Y2Ti2O7 increased gradually with increasing the excitation voltage of LD.The two step process was observed for the up-conversion emission intensity with increasing the excitation power of LD.The up-conversion emissions intensity of Tm3+-Yb3+ co-doped Y2Ti2O7 was decreased with increasing the temperature,which caused by the increase of rate of nonradiative relaxation rate with temperature." @default.
- W2356223625 created "2016-06-24" @default.
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- W2356223625 date "2012-01-01" @default.
- W2356223625 modified "2023-09-27" @default.
- W2356223625 title "Research of Up-conversion Luminescent Properties of Tm~(3+)-Yb~(3+) Co-doped Y_2Ti_2O_7 Powdersby Sol-gel Method" @default.
- W2356223625 hasPublicationYear "2012" @default.
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