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Journal of Applied Physics : Luminescence study of Eu3+ doped GdVO4 nanoparticles: Concentration, particle size, and core/shell effects

By N. Shanta Singh, R. S. Ningthoujam, L. Romila Devi, N. Yaiphaba, V. Sudarsan et al

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Book Id: WPLBN0002169441
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 19 November 2008

Title: Journal of Applied Physics : Luminescence study of Eu3+ doped GdVO4 nanoparticles: Concentration, particle size, and core/shell effects  
Author: N. Shanta Singh, R. S. Ningthoujam, L. Romila Devi, N. Yaiphaba, V. Sudarsan et al
Volume: Issue : November 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection, Journal of Applied Physics Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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Singh, R. S. Ningthoujam, L. Romila Devi, N. Yaiphaba, V. Sudarsan Et A, N. S. (n.d.). Journal of Applied Physics : Luminescence study of Eu3+ doped GdVO4 nanoparticles: Concentration, particle size, and core/shell effects. Retrieved from http://hawaiilibrary.net/


Description
Description: Nanoparticles of GdVO4 doped with Eu3+ and core/shell of GdVO4:Eu3+/GdVO4 are prepared by urea hydrolysis method using ethylene glycol as capping agent as well as reaction medium at 130 °C. Unit cell volume increases when GdVO4 is doped with Eu3+ indicating the substitution of Gd3+ lattice sites by Eu3+. From luminescence study, it is confirmed that there is no particle size effect on emission positions of Eu3+. Optimum luminescence intensity is found to be in 5–10 at. % Eu3+. Above these concentrations, luminescence intensity decreases due to concentration quenching effect. There is an enhancement in luminescence intensity of core/shell nanoparticles. This has been attributed to the reduction in surface inhomogenities of Eu3+ surroundings by bonding to GdVO4 shell. The lifetime for 5D0 level increases with annealing and core/shell formation.

 

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