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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
ABSTRACT

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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
钇, chips, 99.9% trace rare earth metals basis
Sigma-Aldrich
镱, powder, ≥99.9% trace rare earth metals basis
Sigma-Aldrich
钇, powder, −40 mesh, 99.5% trace rare earth metals basis
Sigma-Aldrich
镱, chips, 99.9% trace rare earth metals basis
Sigma-Aldrich
镱, ingot, 99.9% trace rare earth metals basis
Sigma-Aldrich
镨, powder, ~40 mesh, 99.5% trace rare earth metals basis
镱, foil, 25x25mm, thickness 0.125mm, as rolled, 99%
钇, rod, 100mm, diameter 6.35mm, cast, 99%
钇, rod, 50mm, diameter 12.5mm, cast, 99%
钇, rod, 50mm, diameter 2.0mm, cast, 99%
钇, rod, 50mm, diameter 6.35mm, cast, 99%
钇, wire reel, 0.05m, diameter 0.5mm, 99.9%
钇, wire reel, 0.05m, diameter 1.0mm, 99.9%
钇, wire reel, 0.05m, diameter 1.0mm, square section, 99.9%
钇, wire reel, 0.1m, diameter 0.5mm, 99.9%
钇, wire reel, 0.1m, diameter 1.0mm, 99.9%
钇, wire reel, 0.2m, diameter 0.5mm, 99.9%
钇, wire reel, 0.2m, diameter 1.0mm, 99.9%
镨, foil, 25x25mm, thickness 0.25mm, as rolled, 99%
镨, foil, 50x50mm, thickness 0.25mm, as rolled, 99%
镨, foil, not light tested, 25x25mm, thickness 0.005mm, as rolled, 99%
镨, foil, not light tested, 25x25mm, thickness 0.015mm, as rolled, 99%
镨, foil, not light tested, 25x25mm, thickness 0.01mm, as rolled, 99%
镨, foil, not light tested, 25x25mm, thickness 0.025mm, as rolled, 99%
镨, foil, not light tested, 50x50mm, thickness 0.005mm, as rolled, 99%
镨, foil, not light tested, 50x50mm, thickness 0.015mm, as rolled, 99%
镨, foil, not light tested, 50x50mm, thickness 0.01mm, as rolled, 99%
镨, rod, 100mm, diameter 6.35mm, cast, 99%
镨, rod, 50mm, diameter 6.35mm, cast, 99%
镨, wire reel, 100mm, diameter 1.0mm, hard, 99.9%