Luminescence concentration quenching and site-occupancy of Eu 2+ ions in Na 2 Ca 2 Si 3 O 9 phosphors derived from 45S5 glass-ceramics

2016 ◽  
Vol 54 ◽  
pp. 190-194 ◽  
Author(s):  
Yangguang Zhu ◽  
Chao Tong ◽  
Chuanyan Xu ◽  
Yadong Li ◽  
Hyo Jin Seo
Keyword(s):  
Site Occupancy ◽  
Glass Ceramics ◽  
Concentration Quenching ◽  
Luminescence Concentration Quenching ◽  
45S5 Glass

Random laser in Nd:YBO3 nanocrystalline powders presenting luminescence concentration quenching

2019 ◽  
Vol 214 ◽  
pp. 116543 ◽  
Author(s):  
André L. Moura ◽  
Lauro J.Q. Maia ◽  
Vladimir Jerez ◽  
Anderson S.L. Gomes ◽  
Cid B. de Araújo
Keyword(s):  
Concentration Quenching ◽  
Nanocrystalline Powders ◽  
Random Laser ◽  
Luminescence Concentration Quenching

Alleviating luminescence concentration quenching in lanthanide doped CaF2 based nanoparticles through Na+ ion doping

2018 ◽  
Vol 47 (22) ◽  
pp. 7534-7540 ◽  
Author(s):  
Bing Xu ◽  
Dongyu Li ◽  
Zhen Huang ◽  
Chunliang Tang ◽  
Wenhao Mo ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Concentration Quenching ◽  
Optimal Doping ◽  
Ion Doping ◽  
Optimal Doping Concentration ◽  
Luminescence Concentration Quenching

Optimal doping concentration of Nd3+ shifts from 10 mol% to 30 mol% through Na+ doping, along with an ∼32 times NIR brightness increase.

The vibronic spectroscopy and luminescence concentration quenching of the Pr3+ ion in La2O3, LaOF and LiYF4

1995 ◽  
Vol 56 (2) ◽  
pp. 267-276 ◽  
Author(s):  
C. De Mello Donegá ◽  
G.J. Dirksen ◽  
H.F. Folkerts ◽  
A. Meijerink ◽  
G. Blasse
Keyword(s):  
Concentration Quenching ◽  
Luminescence Concentration Quenching

scholarly journals Ln3+ doping in CaYAl3O7 and luminescence concentration quenching studied via a new computer modelling strategy

2019 ◽  
Vol 92 ◽  
pp. 212-216 ◽  
Author(s):  
Giordano F.da C. Bispo ◽  
Robert A. Jackson ◽  
Zélia Soares Macedo ◽  
Mário E.G. Valerio
Keyword(s):  
Computer Modelling ◽  
Concentration Quenching ◽  
Luminescence Concentration Quenching

Influence of Thermal Treatment Temperature on Phase Formation and Bioactivity of Glass-Ceramics Based on the SiO2-Na2O-CaO-P2O5 System

2019 ◽  
Vol 798 ◽  
pp. 229-234 ◽  
Author(s):  
Puripat Kantha ◽  
Naris Barnthip ◽  
Kamonpan Pengpat ◽  
Tawee Tunkasiri ◽  
Nuttapon Pisitpipathsin
Keyword(s):  
Heat Treatment ◽  
Thermal Treatment ◽  
Phase Formation ◽  
Raw Materials ◽  
Glass Ceramics ◽  
Treatment Temperature ◽  
Phase Identification ◽  
X Ray Diffraction ◽  
Thermal Treatment Temperature ◽  
45S5 Glass

In this work, the thermal treatment temperature effect on phase formation and bioactivity of glass-ceramics based on the SiO2-Na2O-CaO-P2O5 system has been studied. The chemical composition of the system is 45 wt.% SiO2, 24.5 wt.% Na2O, 24.5 wt.% CaO and 6 wt.% P2O5 (45S5). The rice husk ash is used as the natural raw materials instead of commercial SiO2. All of the investigated compositions were prepared by melting the glass mixtures at 1350°C for 3 h. The resulting glass samples were heated at different thermal treatment temperatures ranging from 750 to 1050°C with fixed dwell-time for 4 h for crystallization. Phase identification of the 45S5 glass ceramics was carried out by X-Ray diffraction (XRD). Moreover, the physical properties such as density, porosity and mechanical properties were systematically investigated. It was found that, the increasing of heat treatment temperature led to the increasing of the Na2Ca2Si3O9 phase and obtaining better bioactive behavior after incubation of glass-ceramics in simulated body fluid (SBF) for 7 days. The maximum hardness value of 4.02 GPa was achieved after heating at 1050°C for 4 h. However, the density value has slightly changed with various heat treatment temperatures.

Structural, thermal, morphological and dielectric investigations on 45S5 glass and glass-ceramics

2021 ◽  
Vol 562 ◽  
pp. 120780
Author(s):  
S.R. Gavinho ◽  
M.P.F. Graça ◽  
P.R. Prezas ◽  
J. Suresh Kumar ◽  
B.M.G. Melo ◽  
...  
Keyword(s):  
Glass Ceramics ◽  
45S5 Glass
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