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This review focused on rare earth upconversion nanophosphors (UCNPs), a particular class of emitters whose photoluminescence mechanism is of fundamental difference from that of conventional dyes and semiconductor quantum dots. We in the first section gave a brief summary on a variety of synthetic methodologies developed during the past decades. Instead of presenting an exhaustive reference list, we...
The luminescence of Eu 2+ in BaMgSiO 4 with BaB 2 O 4 as flux was studied. The emission spectrum of the phosphor consisted of two bands, peaking at about 398 nm and 515 nm, which were attributed to the emissions from different Eu 2+ sites in the lattice. When the BaB 2 O 4 flux was applied, the intensity of the 398 nm emission was not clearly...
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