Synthesis and Luminescence Property Research of LaInO3: Er3 +/Yb3 + Upconversion Materials
The novel upconversion (UC) luminescence phosphors Er3+/Yb3+ co-doped LaInO3 were synthesized by a solid-state reaction method. X-ray diffraction, scanning electron microscopy (SEM), UC luminescent spectra, as well as the UC emission measurements on sintering temperature and Er3+ concentration were employed to characterize the resulting samples. The optimum synthesis temperature of LaInO3: Er3+/Yb3+ was 1,400 °C, and the optimum Er3+-doping concentration was 2%. Both green (527 nm, 549 nm) and red (665 nm) emission bands were observed in LaInO3: Er3+/Yb3+ under 980 nm laser excitation, which can be assigned to the characteristic level transition of2H11/2 → 4I15/2, 4S3/2 → 4I15/2 and 4F9/2 ∼ 4I15/2 of Er3+, respectively. The dependence of the UC emission on pumping-power indicated that the energy transfer from Yb3+ to Er3+ in the LaInO3 host is a three-photon process. The possible UC luminescent mechanism in LaInO3: Er3+/Yb3+ was discussed in detail.
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Document Type: Research Article
Publication date: December 1, 2014
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