Synthesis and Photoluminescence Properties of Spherical Fine Red (Y1−xyGdxEuy)BO3 (0 ≤ x ≤ 0.36, 0.06 ≤ y ≤ 0.13) Phosphors Using Ultrasonic Spray Pyrolysis

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Abstract:

The post-heat treated (Y1−xyGdxEuy)BO3 (0 ≤ x ≤ 0.36, 0.06 ≤ y ≤ 0.13) powders crystallized in a solution of (Y1−xyGdxEuy)BO3 with the hexagonal vaterite crystal structure, irrespective of composition. The lattice parameter of the (Y0.9−xGdxEu0.1)BO3 (0 ≤ x ≤ 0.36) powders slightly increased with an increase in Gd content. The average powder sizes were sub-micron order and the powders showed relatively uniform size distribution and smooth surface. We obtained improved powder morphologies by adding organic additives such as ethylene glycol and citric acid. For the post-treated (Y0.9−xGdxEu0.1)BO3, the emission intensity became stronger with increasing Gd content up to x = 0.27. In addition, for the post-treated (Y0.73−yGd0.27Euy)BO3, the emission intensity gradually increased with Eu content up to y = 0.13. In particular, the emission intensity of the (Y0.6Gd0.27Eu0.13)BO3 powders synthesized was higher than that of the commercial (Y,Gd)BO3:Eu3+ product.

Keywords: (Y,GD)BO3:EU3+; EUROPIUM; GADOLINIUM; SPHERICAL PHOSPHOR; SPRAY PYROLYSIS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.M32

Publication date: July 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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