Synthesis, structure, and photoluminescence properties of Ce3+ and Tb3+ doped alkaline-earth silicate Sr2MgSi2O7 phosphors for WLEDs

2017 ◽  
Vol 32 (3) ◽  
pp. 547-556 ◽  
Author(s):  
Yongqian Wang ◽  
Yan Chen ◽  
Qimeng Sun ◽  
Bing Yan
Keyword(s):  
Alkaline Earth ◽  
Photoluminescence Properties ◽  
Image Position

Abstract

Phase Transitions, Superconductivity, and Ferromagnetism in Fullerene Systems

MRS Bulletin ◽  
1994 ◽  
Vol 19 (11) ◽  
pp. 28-30 ◽  
Author(s):  
C.N.R. Rao ◽  
Ram Seshadri
Keyword(s):  
Solid State ◽  
Alkaline Earth ◽  
Point Group ◽  
Group Symmetry ◽  
High Electron ◽  
Chemical Transformations ◽  
Disordered Solids ◽  
High Electron Affinity ◽  
Centers Of Mass ◽  
Image Position

By virtue of their unique structures, fullerenes exhibit novel chemical transformations. Particularly pertinent to this article are the interesting properties exhibited by fullerenes in the solid state. These molecules are spherical or near-spherical in shape. Molecules with high point-group symmetry, which are not bound strongly in the solid state, tend to crystallize into structures with long-range periodicity of the molecular centers of mass, but the molecular orientations are random or even dynamically disordered. When dynamically disordered, themolecules rotate about some preferred axis. C60 and C70 satisfy the criteria for such orientationally disordered solids and exhibit rich phase behavior in the solid state. Since C60 has high electron affinity, it forms anion salts with alkali and alkaline-earth metals as well as with strong organic donor molecules. With tetrakis dimethylaminoethylene (TDAE), which is a very powerful electron donor, C60 forms a 1:1 solid that is ferromagnetic. C60-TDAE is the molecular organic ferromagnet with the highest Tc (of 16 K) known to date. Some of the alkali and alkaline-earth fullerides, on the other hand, show superconductivity, with transition temperatures going up to 33K. We shall briefly examine some of these solid-state properties.

The effect of alkaline earth metallic ions on the photoluminescence properties of sol-gel silica glass

2002 ◽  
Vol 74 (5) ◽  
pp. 689-692 ◽  
Author(s):  
P. Yang ◽  
C.F. Song ◽  
M.K. Lü ◽  
G.J. Zhou ◽  
D. Xu ◽  
...  
Keyword(s):  
Silica Glass ◽  
Alkaline Earth ◽  
Sol Gel ◽  
Metallic Ions ◽  
Photoluminescence Properties

(Invited) Photoluminescence Properties of Alkaline-Earth Oxide Nanoparticles

2019 ◽  
Vol 28 (3) ◽  
pp. 67-80 ◽  
Author(s):  
Peter V. Sushko ◽  
Keith McKenna ◽  
D. Muñoz Ramo ◽  
A. L. Shluger ◽  
Andreas Sternig ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Oxide Nanoparticles ◽  
Photoluminescence Properties ◽  
Alkaline Earth Oxide

Study of Calcium Magnesium Aluminate CaMgAl10O17 Formation

2015 ◽  
Vol 670 ◽  
pp. 162-167 ◽  
Author(s):  
Ekaterina A. Gavrilenko ◽  
Ekaterina E. Kuznetsova ◽  
Liliya A. Selyunina ◽  
Lyudmila N. Mishenina
Keyword(s):  
Electron Microscopy ◽  
Alkaline Earth ◽  
Sol Gel ◽  
Magnesium Aluminate ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Alkaline Earth Elements ◽  
Calcium Magnesium ◽  
Scanning Electron

Aluminates of alkaline earth elements have high photoluminescence properties and resistance to UV radiation. Due to this, they are widely used in optical industry. In this work magnesium calcium aluminate was prepared by sol-gel method. The main stages of the formation of the crystalline structure CaMgAl10O17 were determined by thermal analysis, X-ray diffraction and IR spectroscopy. The surface morphology was studied using scanning electron microscopy. The ratio of elements in the product was installed by X-ray microanalysis.

Synthesis and photoluminescence properties of Eu3+-doped ZrO2 hollow spheres

2015 ◽  
Vol 30 (24) ◽  
pp. 3740-3745 ◽  
Author(s):  
Min Zhang ◽  
Weiwei Zuo ◽  
Meifang Zhu ◽  
Dianguang Liu ◽  
Yigao Chen ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Photoluminescence Properties ◽  
Image Position

Abstract

Enhancement of yellow emission and afterglow in Sr3SiO5: Eu2+, Dy3+ by adding alkaline earth metal fluorides

2012 ◽  
Vol 27 (19) ◽  
pp. 2535-2539 ◽  
Author(s):  
Kai Dong ◽  
Junjie Liao ◽  
Siguo Xiao ◽  
Xiaoliang Yang ◽  
Jian Wen Ding
Keyword(s):  
Alkaline Earth ◽  
Earth Metal ◽  
Yellow Emission ◽  
Alkaline Earth Metal ◽  
Metal Fluorides ◽  
Image Position

Abstract

Sign in / Sign up

Export Citation Format

Share Document