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- W2394276302 abstract "The upconversion luminescence properties of Ln2O2S∶Yb,Pr(Ln=Y, La) nanocrystals prepared by ethanol assistant solution combustion method have been investigated. The as-prepared Ln2O2S∶Yb,Pr nanophosphor exhibit intense blue-green emission under 980nm IR pump in daytime by the naked eyes. Y2O2S∶Yb,Pr exhibits maximum emission with peak at 514nm, and La2O2S∶Yb,Pr shows the strongest emission at 508nm. It can be attributed to the Pr3+ ions 3P0 to 3H4 allowed electric dipole transition. The proximity of the 5d orbitals to the 4f states of Pr3+ results in a strong dependence of the f-f transitions on the environment in which Pr3+ is embedded. Thus, the upconversion luminescence of Pr3+ ions 3P0 to 3H4 transition shows a strong dependence of different host lattices." @default.
- W2394276302 created "2016-06-24" @default.
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- W2394276302 date "2009-01-01" @default.
- W2394276302 modified "2023-09-26" @default.
- W2394276302 title "Investigation on the upconversion properties of Ln_2O_2S∶Yb,Pr (Ln=Y, La) nanocrystals" @default.
- W2394276302 hasPublicationYear "2009" @default.
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