Photoluminescence properties of rare-earth-doped (Er3+,Yb3+) Y2O3nanophosphors by a combustion synthesis method

Luminescence ◽  
2015 ◽  
Vol 31 (3) ◽  
pp. 728-737 ◽  
Author(s):  
Manmeet Kaur ◽  
D. P. Bisen ◽  
N. Brahme ◽  
Prabhjot Singh ◽  
I. P. Sahu
Keyword(s):  
Rare Earth ◽  
Combustion Synthesis ◽  
Synthesis Method ◽  
Photoluminescence Properties ◽  
Rare Earth Doped

ChemInform Abstract: Crystal, Electronic Structures and Photoluminescence Properties of Rare-Earth Doped LiSi2N3.

ChemInform ◽  
2009 ◽  
Vol 40 (18) ◽  
Author(s):  
Y. Q. Li ◽  
N. Hirosaki ◽  
R. J. Xie ◽  
T. Takeka ◽  
M. Mitomo
Keyword(s):  
Rare Earth ◽  
Electronic Structures ◽  
Photoluminescence Properties ◽  
Rare Earth Doped

Engineering the Design of Brightly-Emitting Luminescent Nanostructured Photonic Composite Systems

2013 ◽  
Vol 66 (9) ◽  
pp. 1008 ◽  
Author(s):  
Mei Chee Tan ◽  
Dominik J. Naczynski ◽  
Prabhas V. Moghe ◽  
Richard E. Riman
Keyword(s):  
Rare Earth ◽  
Optical Waveguides ◽  
Impact Resistance ◽  
Synthesis Method ◽  
Research Progress ◽  
Design And Synthesis ◽  
Composite Systems ◽  
Rare Earth Doped

Rare-earth doped infrared emitting composites have extensive applications in integrated optical devices such as fibre amplifiers and waveguides for telecommunications, remote sensing, and optoelectronics. In addition, recent advancements in infrared optical imaging systems have expanded the biomedical applications for infrared-emitting composites in diagnosis and imaging of living tissue systems both in vitro and in vivo. Composite systems combine the advantages of polymers (light weight, flexibility, good impact resistance, improved biomedical compatibility, and excellent processability) and inorganic phosphor host materials (low phonon energy, intense emissions, chemical durability, and high thermal stability). This paper provides a brief review of our research progress in the design and synthesis of luminescent photonic nanocomposite systems comprised of rare-earth doped particulates dispersed in a continuous polymeric matrix. The design of brightly-emitting rare-earth doped materials and the influence of host and dopant chemistries on the emission properties are discussed. Methods used to assess and measure the phosphors’ performance are also evaluated in this work. This paper will also examine the solvothermal synthesis method used to control the physical and chemical characteristics of the rare-earth doped particles, and how these characteristics impact the infrared optical properties. Also presented here are recent advances reported with luminescent nanocomposite systems fabricated for optical waveguides and biomedical imaging.

Crystal, electronic structures and photoluminescence properties of rare-earth doped LiSi2N3

2009 ◽  
Vol 182 (2) ◽  
pp. 301-311 ◽  
Author(s):  
Y.Q. Li ◽  
N. Hirosaki ◽  
R.J. Xie ◽  
T. Takeka ◽  
M. Mitomo
Keyword(s):  
Rare Earth ◽  
Electronic Structures ◽  
Photoluminescence Properties ◽  
Rare Earth Doped

Conventional synthesis and characterization of rare earth doped barium borophosphates, BaBPO5:RE (Y, Gd and La)

2016 ◽  
Vol 81 (2) ◽  
pp. 49-54
Author(s):  
G. Çelik Gül ◽  
F. Kurtuluş
Keyword(s):  
Rare Earth ◽  
Synthesis Method ◽  
Unit Cell ◽  
Synthesis And Characterization ◽  
Dihydrogen Phosphate ◽  
Unit Cell Parameters ◽  
X Ray ◽  
Cell Parameters ◽  
Rare Earth Doped

Purpose: of this research, our target is synthesis and characterization of rare earth metalssuch as Y, Gd and La doped barium borophosphate compounds which are applicable innon-linear optics industry.Design/methodology/approach: The starting materials rare earth oxides, bariumcarbonate, boric acid and ammonium dihydrogen phosphate as analytically grade weighed0.01:1:1:1 molar ratio and homogenized in an agate mortar. The mixture placed into aporcelain crucible to heat in high temperature oven step by step. First, mixtures were waitedat 400°C for 2 hours for calcination process, subsequently heated 900°C with step rate10°C/m for 8 hours, and finally cooled down to room temperature with step rate 10°C/m.After many grindings final product get ready for characterization. X-ray powder diffraction(XRD) analysis was performed using PANanalytical X’Pert PRO Diffractometer (XRD) withCu Kα (1.5406 Å, 45 kV and 30 mA) radiation. Fourier transform infrared spectroscopy(FTIR) was taken on a Perkin Elmer Spectrum 100 FTIR Spectrometer from 4000 to 650cm-1. Scanning electron microscopy was achieved in SEM JEOL 6390-LV. Luminescenceproperties were performed by Andor Solis Sr 500i spectrophotometer. Conventional solidstate syntheses were done in Protherm furnace.Findings: The powder XRD patterns of the samples show that there is no impurity related todoping materials mean all diffractions corresponding to host material barium borophosphatecrystallized in hexagonal system with unit cell parameters a=7.1003 and c=6.9705 Å. Theunit cell parameters of rare earth doped barium borophosphates were calculated and displayboth increase and decrease depends on ionic Radius of rare earths. The other supportingmethods confirm the crystal structure and luminescence properties.Research limitations/implications: The synthesis method has some disadvantagessuch as low homogeneity, non-uniform product etc. We tried to minimize these negativeaspects in our research and succeeded.Practical implications: Phosphor materials Y:BaBPO5, Gd:BaBPO5 and La:BaBPO5(ICSD 51171) were synthesized by conventional solid state method and characterizationswas mainly based on powder X-ray diffraction pattern. Also, morphological and luminescenceproperties were completed to get the highest knowledge.Originality/value: Of the paper is first time conventional synthesis of Y, Gd and La dopedBaBPO5 compounds, calculation of unit cell parameters, and investigation of morphologicaland luminescent properties.

Photoluminescence properties of rare earth doped α-Si3N4

2010 ◽  
Vol 130 (7) ◽  
pp. 1147-1153 ◽  
Author(s):  
Y.Q. Li ◽  
N. Hirosaki ◽  
R.-J. Xie ◽  
T. Takeda ◽  
M. Mitomo
Keyword(s):  
Rare Earth ◽  
Photoluminescence Properties ◽  
Rare Earth Doped

scholarly journals Infrared optically stimulated luminescence of rare earth doped CaF2 and co-doped with Al or Li produced by combustion synthesis

2020 ◽  
Vol 138 ◽  
pp. 106366 ◽  
Author(s):  
Maria Thalita S. Medeiros ◽  
Vinícius S.M. Barros ◽  
Viviane K. Asfora ◽  
Helen J. Khoury ◽  
Francesco d’Errico
Keyword(s):  
Rare Earth ◽  
Combustion Synthesis ◽  
Optically Stimulated Luminescence ◽  
Rare Earth Doped ◽  
Co Doped

Luminescence Properties of Rare-Earth Doped α-SiAlONs

2006 ◽  
Vol 317-318 ◽  
pp. 797-802
Author(s):  
Rong Jun Xie ◽  
Mamoru Mitomo ◽  
Naoto Hirosaki
Keyword(s):  
Rare Earth ◽  
Rare Earths ◽  
Room Temperature ◽  
Luminescence Properties ◽  
Activator Concentration ◽  
Photoluminescence Properties ◽  
Host Crystal ◽  
Emission Properties ◽  
White Leds ◽  
Rare Earth Doped

Rare-earth doped Ca-α-SiAlON phosphors, with the compositions of (Ca1-3/2xREx)m/2Si12-m-nAlm+nOnN16-n (RE = Ce, Sm, Eu, Tb, Yb and Dy, 0.5 ≤ m = 2n ≤ 3.0), were prepared by reaction at 1700oC for 2h under 10 atm N2. The concentration of rare earths varied from 3 to 30 at% with respect to Ca. The photoluminescence properties of the powders were investigated at room temperature. The results show that (i) strong visible emissions are observed in rare-earth doped Ca-α-SiAlONs; (ii) the emission properties can be optimized by tailoring the activator concentration and the composition of the α-SiAlON host crystal; and (iii) the yellow Eu2+-doped Ca-α-SiAlON phosphors can be used in warm white LEDs.

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