Study on the effects of 5d energy locations of Ce3+ ions on NIR quantum cutting process in Y2SiO5: Ce3+, Yb3+
The effects of the 5d energy locations of Ce3+ centers on the NIR quantum cutting process were studied in Y2SiO5 with two different substitutional Y3+ lattice sites for Ce3+ and Yb3+. Powder XRD and Rietveld refinement were used to characterize phase purity, crystal structure, lattice parameters and occupation fractions of Y2-x-yCexYbySiO5 (x = 0.002 and 0.3, y = 0-0.2). PLE and PL spectra show that both kinds of Ce3+ centers in Y2-xy CexYbySiO5 can cooperatively transfer energy to Yb3+-Yb3+ ions pair. The dependence of the integrated emission intensities of Ce3+ and Yb3+, decay lifetime (τ) of ...
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