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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

要旨

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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Sigma-Aldrich

イットリウム, chips, 99.9% trace rare earth metals basis

Sigma-Aldrich

イッテルビウム, powder, ≥99.9% trace rare earth metals basis

イッテルビウム, lump, 25g, max. size 25mm, 99.9%

Sigma-Aldrich

イットリウム, diam. × thickness 2.00 in. × 0.25 in., 99.9% trace metals basis

イットリウム, wire reel, 0.1m, diameter 0.5mm, 99.9%

イットリウム, foil, 25mm disks, thickness 0.50mm, as rolled, 99%

イッテルビウム, rod, 50mm, diameter 10.0mm, cast, 99%

イットリウム, rod, 50mm, diameter 2.0mm, cast, 99%

イットリウム, wire reel, 0.05m, diameter 0.5mm, 99.9%

イットリウム, rod, 50mm, diameter 6.35mm, cast, 99%

イットリウム, rod, 50mm, diameter 12.5mm, cast, 99%

イットリウム, foil, not light tested, 25x25mm, thickness 0.005mm, as rolled, 99%

イットリウム, wire reel, 0.05m, diameter 1.0mm, 99.9%

イッテルビウム, foil, not light tested, 50x50mm, thickness 0.025mm, as rolled, 99%

イッテルビウム, rod, 50mm, diameter 2.0mm, cast, 99%

イットリウム, rod, 100mm, diameter 12.5mm, cast, 99%

イッテルビウム, lump, 100g, max. size 25mm, 99.9%

イットリウム, rod, 100mm, diameter 6.35mm, cast, 99%

イッテルビウム, lump, 50g, max. size 25mm, 99.9%

イットリウム, foil, not light tested, 50x50mm, thickness 0.025mm, as rolled, 99%

イッテルビウム, foil, not light tested, 25x25mm, thickness 0.025mm, as rolled, 99%

イッテルビウム, rod, 100mm, diameter 6.35mm, cast, 99%

イットリウム, foil, not light tested, 100x100mm, thickness 0.025mm, as rolled, 99%

イットリウム, wire reel, 0.2m, diameter 0.5mm, 99.9%

イットリウム, wire reel, 0.2m, diameter 1.0mm, 99.9%

イッテルビウム, foil, not light tested, 25x25mm, thickness 0.005mm, as rolled, 99%

イッテルビウム, rod, 50mm, diameter 6.35mm, cast, 99%

イットリウム, wire reel, 0.1m, diameter 1.0mm, 99.9%

イッテルビウム, rod, 100mm, diameter 10.0mm, cast, 99%