Enhanced Luminescence Properties of Hexagonal-Phase NaYF4: Eu3+ Microrods by Annealing Treatment

Abstract:

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Hexagonal phase NaYF4: Eu3+ materials were successfully synthesized by a facile EDTA-assisted hydrothermal route. The microstructure, morphology and luminescence property of the as-synthesized samples were characterized by XRD, XPS, SEM, TEM, HRTEM and photoluminescence (PL) spectra. The pristine NaYF4: Eu3+ microprisms have uniform size and morphology with 3-4 micrometers in length and ca. 500 nm in diameter. The annealing treatment afterwards achieved high crystallinity, and moreover, had a remarkable influence on morphologies of the NaYF4: Eu3+ sample. In comparison with the pristine sample, the annealed NaYF4: Eu3+ microcrystals had a markedly enhancement of down-conversion (DC) luminescence properties, which may be due to the high crystallinity and large surface roughness resulted from annealing treatment.

Info:

Periodical:

Advanced Materials Research (Volumes 335-336)

Edited by:

Yun-Hae Kim, Prasad Yarlagadda, Xiaodong Zhang and Zhijiu Ai

Pages:

1009-1013

DOI:

10.4028/www.scientific.net/AMR.335-336.1009

Citation:

W. K. Zhang et al., "Enhanced Luminescence Properties of Hexagonal-Phase NaYF4: Eu3+ Microrods by Annealing Treatment", Advanced Materials Research, Vols. 335-336, pp. 1009-1013, 2011

Online since:

September 2011

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Price:

$35.00

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