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Morphology and Luminescence of(GdY)2O3:Eu Particles Prepared by Colloidal Seed-Assisted Spray Pyrolysis by Hyun Sook Roh; Yun Chan Kang; Seung Bin Park is a Chemistry article available to read on EtoBox.

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Gd x Y 1-x ) 2 O 3 :Eu [x = 0, 0.25, 0.5, 0.75, 1.0] phosphor particles with 6 at.% Eu dopant of total concentration were prepared using spray pyrolysis. The effects of composition on the morphology, crystallinity, and photoluminescence characteristics of composite particles were investigated. The morphological control of (Gd x Y 1-x ) 2 O 3 :Eu particles in spray pyrolysis was also attempted by using colloidal and aqueous solutions. The particles prepared from colloidal solutions containing small amounts of Gd or Y hydroxy carbonate sol as seed material had spherical and filled morphology after the post-treatment at high temperature. On the other hand, the (Gd x Y 1-x ) 2 O 3 :Eu particles prepared from aqueous solutions were hollow and porous after post-treatment in all compositions. Particles prepared from colloidal solutions had photoluminescence emission intensities higher than those of particles prepared from aqueous solutions.

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Author

Hyun Sook Roh; Yun Chan Kang; Seung Bin Park

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

2000

Language

EN

Field

Chemistry (Physical Sciences)