Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Synthesis, structural, and photoluminescence studies of LaF3:Pr, LaF3:Pr@LaF3, and LaF3:Pr@LaF3@SiO2 nanophosphors

Synthesis, structural, and photoluminescence studies of LaF3:Pr, LaF3:Pr@LaF3, and... LaF3: Pr (core) and LaF3:Pr@LaF3 (core/shell) nanophosphors (NPs) were successfully synthesized by a facile polyol-based co-precipitation process and their surface was modified with silica using sol-gel route. Powder X-ray diffraction pattern revealed a well crystalline hexagonal structure. The TEM images revealed a successful silica surface coating on the surface of core/shell NPs, which was further confirmed by EDX and FTIR analysis. These core and core/shell/SiO2 NPs show good solubility in aqueous and non-aqueous solvent. Optical band gap energy decreased after surface coating as growth of surface shell enhanced the crystallinity of the material. The excitation and emission spectra were measured to investigate the successful doping of luminescent praseodymium in the core matrix. The emission and excitation transitions were greatly enhanced after inert layer coating causing light scattering effect, which reduced the nonradioactive transition rate surrounding the core NPs. It was found that silica surface modification thus improved the solubility and colloidal stability in aqueous and non-aqueous solvent. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Australian Ceramic Society Springer Journals

Synthesis, structural, and photoluminescence studies of LaF3:Pr, LaF3:Pr@LaF3, and LaF3:Pr@LaF3@SiO2 nanophosphors

Loading next page...
 
/lp/springer-journals/synthesis-structural-and-photoluminescence-studies-of-laf3-pr-laf3-pr-c3Cj77Feox
Publisher
Springer Journals
Copyright
Copyright © 2018 by Australian Ceramic Society
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Materials Engineering; Inorganic Chemistry
ISSN
2510-1560
eISSN
2510-1579
DOI
10.1007/s41779-018-0178-3
Publisher site
See Article on Publisher Site

Abstract

LaF3: Pr (core) and LaF3:Pr@LaF3 (core/shell) nanophosphors (NPs) were successfully synthesized by a facile polyol-based co-precipitation process and their surface was modified with silica using sol-gel route. Powder X-ray diffraction pattern revealed a well crystalline hexagonal structure. The TEM images revealed a successful silica surface coating on the surface of core/shell NPs, which was further confirmed by EDX and FTIR analysis. These core and core/shell/SiO2 NPs show good solubility in aqueous and non-aqueous solvent. Optical band gap energy decreased after surface coating as growth of surface shell enhanced the crystallinity of the material. The excitation and emission spectra were measured to investigate the successful doping of luminescent praseodymium in the core matrix. The emission and excitation transitions were greatly enhanced after inert layer coating causing light scattering effect, which reduced the nonradioactive transition rate surrounding the core NPs. It was found that silica surface modification thus improved the solubility and colloidal stability in aqueous and non-aqueous solvent.

Journal

Journal of the Australian Ceramic SocietySpringer Journals

Published: Jan 20, 2018

References