Phase- and Size-Controllable Synthesis of Hexagonal Upconversion Rare-Earth Fluoride Nanocrystals through an Oleic Acid/Ionic Liquid Two-Phase System

2012 ◽  
Vol 18 (19) ◽  
pp. 5954-5969 ◽  
Author(s):  
Meng He ◽  
Peng Huang ◽  
Chunlei Zhang ◽  
Jiebing Ma ◽  
Rong He ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Oleic Acid ◽  
Phase System ◽  
Controllable Synthesis ◽  
Two Phase ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

A general strategy for the synthesis of upconversion rare earth fluoride nanocrystals via a novel OA/ionic liquid two-phase system

2011 ◽  
Vol 47 (33) ◽  
pp. 9510 ◽  
Author(s):  
Meng He ◽  
Peng Huang ◽  
Chunlei Zhang ◽  
Feng Chen ◽  
Can Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Phase System ◽  
General Strategy ◽  
Two Phase ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

BaCaLu2F10:Ln3+ (Ln = Eu, Dy, Tb, Sm, Yb/Er, Yb/Ho) spheres: ionic liquid-based synthesis and luminescence properties

CrystEngComm ◽  
2018 ◽  
Vol 20 (40) ◽  
pp. 6173-6182 ◽  
Author(s):  
Wei Liu ◽  
Qi Sun ◽  
Ming Yan ◽  
Yanhua Song ◽  
Xiuqing Zhou ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Luminescence Properties ◽  
Alkaline Earth Metal ◽  
Hydrothermal Route ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

Alkaline earth metal rare earth fluoride BaCaLu2F10:Ln3+ (Ln = Eu, Dy, Tb, Sm, Yb/Er, Yb/Ho) submicrospheres with uniform morphology and size were synthesized via a facile ionic liquid-based hydrothermal route. The down- and up-conversion luminescence has been investigated.

Characterization of Rare-Earth Fluoride Anti-Stokes Phosphors by Scanning arid Transmission Electron Microscopy

1971 ◽  
Vol 29 ◽  
pp. 142-143
Author(s):  
N. M. P. Low ◽  
L. E. Brosselard
Keyword(s):  
Electron Microscopy ◽  
Rare Earth ◽  
Elevated Temperatures ◽  
Stoichiometric Composition ◽  
Rare Earth Ions ◽  
Crystalline Solid ◽  
Precipitation Process ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Rare Earth Fluorides

There has been considerable interest over the past several years in materials capable of converting infrared radiation to visible light by means of sequential excitation in two or more steps. Several rare-earth trifluorides (LaF3, YF3, GdF3, and LuF3) containing a small amount of other trivalent rare-earth ions (Yb3+ and Er3+, or Ho3+, or Tm3+) have been found to exhibit such phenomenon. The methods of preparation of these rare-earth fluorides in the crystalline solid form generally involve a co-precipitation process and a subsequent solid state reaction at elevated temperatures. This investigation was undertaken to examine the morphological features of both the precipitated and the thermally treated fluoride powders by both transmission and scanning electron microscopy.Rare-earth oxides of stoichiometric composition were dissolved in nitric acid and the mixed rare-earth fluoride was then coprecipitated out as fine granules by the addition of excess hydrofluoric acid. The precipitated rare-earth fluorides were washed with water, separated from the aqueous solution, and oven-dried.

Ionic liquid/H2O two-phase synthesis and luminescence properties of BaGdF5:RE3+ (RE = Ce/Dy/Eu/Yb/Er) octahedra

2021 ◽  
Author(s):  
Wei Liu ◽  
Qi Sun ◽  
Haifeng Zou ◽  
Xiangting Zhang ◽  
Xue Xiao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Luminescence Properties ◽  
Phase System ◽  
Two Phase ◽  
Phase Synthesis

BaGdF5:RE3+ (RE = Ce/Dy/Eu) octahedra were synthesized via a facile ionic liquid/H2O two-phase system. Multi-color emissions have been realized.

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