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Pr3+/Yb3+ co-doped beta-phase NaYF4 microprisms: controlled synthesis and upconversion luminescence.

Pr3+/Yb3+ co-doped beta-phase NaYF4 microprisms: controlled synthesis and upconversion luminescence.

Journal of nanoscience and nanotechnology (2014-04-18)

Wei Gao, Hairong Zheng, Dangli Gao, Enjie He, Jiao Li, Yinxun Tu

摘要

Pr3+/Yb3+ co-doped hexagonal NaYF4(beta-NaYF4) microprisms were synthesized by the hydrothermal method, and ethylenediaminetetraacetic acid (EDTA) was introduced to control the size of the microcrystal samples. Bright upconverted fluorescence emission was observed when the samples were excited with an infrared (IR) laser at 976.4 nm. The emission was found to originate from the transitions of 3P0-3F2, 3P0-3H6 or 1G4-3H4, 3P1-3H6, 3P0-3H5, 3P1-3H5, and 3P0-3H4 of Pr3+ ions. Possible mechanisms for upconversion fluorescence and concentration dependence as well as the crystal structure and its formation of NaYF4:Yb3+/Pr3+ microprisms were explored and discussed based on the experimental observations.

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钇, chips, 99.9% trace rare earth metals basis

Sigma-Aldrich

镱, powder, ≥99.9% trace rare earth metals basis

镱, lump, 25g, max. size 25mm, 99.9%

Sigma-Aldrich

钇, diam. × thickness 2.00 in. × 0.25 in., 99.9% trace metals basis

钇, wire reel, 0.1m, diameter 0.5mm, 99.9%

钇, foil, 25mm disks, thickness 0.50mm, as rolled, 99%

镱, rod, 50mm, diameter 10.0mm, cast, 99%

钇, wire reel, 0.05m, diameter 0.5mm, 99.9%

钇, rod, 50mm, diameter 2.0mm, cast, 99%

钇, rod, 50mm, diameter 6.35mm, cast, 99%

镨, rod, 100mm, diameter 6.35mm, cast, 99%

钇, rod, 50mm, diameter 12.5mm, cast, 99%

镱, foil, not light tested, 50x50mm, thickness 0.025mm, as rolled, 99%

钇, foil, not light tested, 25x25mm, thickness 0.005mm, as rolled, 99%

钇, wire reel, 0.05m, diameter 1.0mm, 99.9%

镨, rod, 50mm, diameter 6.35mm, cast, 99%

镱, rod, 50mm, diameter 2.0mm, cast, 99%

钇, rod, 100mm, diameter 12.5mm, cast, 99%

钇, rod, 100mm, diameter 6.35mm, cast, 99%

镨, foil, not light tested, 25x25mm, thickness 0.015mm, as rolled, 99%

镨, foil, not light tested, 25x25mm, thickness 0.005mm, as rolled, 99%

镨, foil, not light tested, 25x25mm, thickness 0.025mm, as rolled, 99%

镱, lump, 100g, max. size 25mm, 99.9%

镱, lump, 50g, max. size 25mm, 99.9%

镱, rod, 100mm, diameter 6.35mm, cast, 99%

钇, wire reel, 0.2m, diameter 1.0mm, 99.9%

镨, foil, 50x50mm, thickness 0.25mm, as rolled, 99%

镱, foil, not light tested, 25x25mm, thickness 0.005mm, as rolled, 99%

镱, foil, not light tested, 25x25mm, thickness 0.025mm, as rolled, 99%

钇, foil, not light tested, 100x100mm, thickness 0.025mm, as rolled, 99%