Nanocrystalline Cubic Yttria: Synthesis and Optical Properties

Abstract

For the first time Y2O3 has been deposited in the cubic equilibrium structure with a small particle size of 10 nm in a single processing step; the Figure shows the XRD patterns with Bragg peaks consistent with the structure. This communication shows that this good crystalline quality makes Y2O3 a promising host material for doped nanocrystalline phosphorus with high efficiency in lighting systems.

Preparation of Yb2O3 submicron- and nano-materials via electrospinning

“…The preparation and study of submicron and nanocrystalline oxides containing lanthanides are currently an important area in materials research [1][2][3][4][5]. Lanthanide oxides are widely used in a range of technological applications, like electronics, technical ceramics, catalysts, colored glasses, phosphors, laser materials and polishing powders for optics [6].…”

“…It is the case of the catalytic activity that increases with the porosity and the reduction of the grain size, as a consequence of enlarged specific surface area [7]; the wavelength of luminescent materials is as well a function of the grain dimensions, due to quantum confinement effects [8,9]. Therefore, several methods have been developed for the preparation of lanthanide oxides as submicron and nanocrystalline materials [1][2][3][4][5].…”

Synthesis and characterization of nanocrystalline Yb:Lu2O3 by modified Pechini method

“…The high melting point of this compound, around 2763 K makes difficult to be obtained by crystal growth methods [10]. So, in the past few years several methods to obtain sesquioxides (RE 2 O 3 RE = rare earths) in the nanometer range have been developed such as chemical vapor techniques [11], gas-phase condensation [12], combustion synthesis [13,14] and chemical wet process [15].…”

Structural characterization and ytterbium spectroscopy in Sc2O3 nanocrystals

“…In recent years, sesquioxide nanocrystals have been synthesized using various techniques, including gas-phase condensation [16], combustion synthesis [17,18], vapor techniques [19], chemical wet processes [20] and, by the authors of this paper, a sol-gel method [21].…”