Effect of doping concentration and annealing temperature on luminescence properties of Y2O3:Eu3+ nanophosphor prepared by colloidal precipitation method

2012 ◽  
Vol 132 (8) ◽  
pp. 2023-2029 ◽  
Author(s):  
G. Siddaramana Gowd ◽  
Manoj Kumar Patra ◽  
Sandhya Songara ◽  
Anuj Shukla ◽  
Manoth Mathew ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Annealing Temperature ◽  
Luminescence Properties ◽  
Precipitation Method ◽  
Effect Of Doping

Effect of doping concentration on particle growth and luminescence properties of monodispersed Dy3+: Y2O3

2016 ◽  
Vol 664 ◽  
pp. 304-310 ◽  
Author(s):  
Song Hu ◽  
Xianpeng Qin ◽  
Guohong Zhou ◽  
Xiaoxia Liu ◽  
Chunhua Lu ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Particle Growth ◽  
Luminescence Properties ◽  
Effect Of Doping

Luminescence Properties of ZnO:Eu3+ Red Emitting Phosphor Prepared by Precipitation Method

2013 ◽  
Vol 690-693 ◽  
pp. 594-597
Author(s):  
Lin Yan Jia ◽  
Zhong Bao Shao ◽  
Jun Feng Han
Keyword(s):  
Doping Concentration ◽  
Emission Spectra ◽  
Electric Dipole Transition ◽  
Dipole Transition ◽  
Luminescence Properties ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Matrix Lattice ◽  
Red Emitting Phosphor

Zinc oxide doped with Eu3+ ions red emitting phosphors were prepared by precipitation method, and its luminescence properties were investigated. The phosphors were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL) spectra. The ZnO:Eu3+ phosphors were obtained at 600°C by calcining precipitation precursor. These phosphors can be effectively excited at 465nm. In emission spectra, the strongest peak at 616nm correlating to red emission is due to the electric dipole transition 5D07F2 of Eu3+ ions. Eu3+ions replaced Zn2+ ions and occupied the non-centrosymmetric sites in the ZnO matrix lattice. The phosphor particles with narrow distribution range are approximately 100-200nm in size. The luminescence properties of ZnO:Eu3+ phosphor with 8 mol% doping concentration of Eu3+ is optimal.

Effect of doping concentration and annealing temperature on the luminescence of novel orange red emitting CePO4:Sm3+ nanocrystals

2019 ◽  
Vol 209 ◽  
pp. 197-207 ◽  
Author(s):  
S. Sisira ◽  
Linju Ann Jacob ◽  
Kukku Thomas ◽  
Dinu Alexander ◽  
P.R. Biju ◽  
...  
Keyword(s):  
Doping Concentration ◽  
Annealing Temperature ◽  
Effect Of Doping

Crystal structure and magnetic properties of cerium-doped YIG: Effect of doping concentration and annealing temperature

2018 ◽  
Vol 730 ◽  
pp. 127-134 ◽  
Author(s):  
E. Baños-López ◽  
C.A. Cortés-Escobedo ◽  
F. Sánchez-De Jesús ◽  
A. Barba-Pingarrón ◽  
A.M. Bolarín-Miró
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Doping Concentration ◽  
Annealing Temperature ◽  
Effect Of Doping

Effects of annealing temperature on structural and luminescence properties of CdMoO4:Dy3+ phosphor synthesized at room temperature by co-precipitation method

2020 ◽  
Vol 102 ◽  
pp. 106172 ◽  
Author(s):  
N. Premjit Singh ◽  
N. Ramananda Singh ◽  
Y. Rangeela Devi ◽  
Brojendro Singh Sh ◽  
Th. David Singh ◽  
...  
Keyword(s):  
Room Temperature ◽  
Annealing Temperature ◽  
Luminescence Properties ◽  
Precipitation Method ◽  
Co Precipitation

LUMINESCENCE CHARACTERISTICS OF RARE-EARTH ERBIUM ION-DOPED NANOCRYSTALLINE ZINC OXIDE

2009 ◽  
Vol 18 (04) ◽  
pp. 649-656 ◽  
Author(s):  
SONG GUO-LI
Keyword(s):  
Doping Concentration ◽  
Annealing Temperature ◽  
Emission Spectra ◽  
Chemical Precipitation ◽  
Nanocrystalline Powders ◽  
Precipitation Method ◽  
Characteristic Emission ◽  
Excitation State ◽  
Pl Intensity ◽  
The Relationship

Er3+ -doped ZnO nanocrystalline powders are successfully prepared by the chemical precipitation method, using various doping concentrations of Er3+ at different annealing temperatures from 500°C to 900°C. The characteristic emission peaks of the excitation state 4S3/2 (550 nm), 2 H 11/2 (520 nm), 4 F 5/2 (455 nm) → 4 I 15/2 transition of Er3+ ions are observed in a wide visible band of the ZnO host. The relationship between the PL intensity of integration of nanocrystalline ZnO:Er3+ and the annealing temperature and doping concentration of Er3+ is given; it is found that the optimal dopant concentration and annealing temperature are 4.0 × 10-3 M and 850°C for the 4 S 3/2 → 4 I 15/2 (550 nm) and 4 F 5/2 → 4 I 15/2 (455 nm) transition of Er3+ . Based on these results, the mechanism of the emission spectra of ZnO is analyzed and its defects on the spectral properties are discussed. An energy transfer from excited states of ZnO hosts to doping Er3+ ion centers is revealed by the fact that PL intensity of the peaks of nanocrystalline ZnO:Er3+ changes with the annealing temperature and doping concentration of Er3+ , and another from the 4f–4f transition of Er3+ .

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