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HomeMaterials Science ForumMaterials Science Forum Vol. 848Effect of Compositions, Crystal Structures and...

Effect of Compositions, Crystal Structures and Morphologies on Photo-Luminescent Property of LaPO₄:Gd³⁺

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Abstract:

Various LaPO₄:Gd³⁺ samples were synthesized by the hydrothermal method under different conditions to investigate the influence of crystalline structures, compositions and morphologies on the photo-luminescence. The compositions, crystal structures and morphologies were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and photo-luminescence emission spectrum (PL). The results revealed that the emission intensity of LaPO₄:Gd³⁺ reached the maximum value as the mass percentage concentration of Gd³⁺ ions ascended to 3%. Monoclinic LaPO₄:Gd³⁺ had stronger emission intensity than hexagonal sample which had more zeolitic water, higher symmetry and lower crystallinity. The nanospheres which dispersed better and had higher uniformity and surface atom fraction had the stronger PL intensity than the nanorods. It has been found that the La_0.97Gd_0.03PO₄, which was prepared under the condition of pH=1, T=20 °C and excess PO₄^3-, performed the best PL property after heat treatment at 900 °C for 4h.

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Periodical:

Materials Science Forum (Volume 848)

Pages:

413-418

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.848.413

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Online since:

March 2016

Authors:

Luo Zhang, Xiao Yan Wang, Xin Wang, Hong Tao Ni

Keywords:

Composition, Crystal Structure, LaPO₄:Gd³⁺, Morphology, Photo-Luminescent Property

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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