UV and VUV Spectroscopy of ns2-type Ions Co-doped YBO3:Eu3+ Red Phosphor

2006 ◽  
Vol 916 ◽  
Author(s):  
L.L. Wang ◽  
Y.H. Wang ◽  
W.X. Hua
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Absorption Band ◽  
Excitation Spectrum ◽  
Solid State Reaction ◽  
Vacuum Ultraviolet ◽  
Host Lattice ◽  
Red Phosphor ◽  
Vuv Spectroscopy ◽  
Co Doped

AbstractYBO3:5% Eu3+ co-doped with some ns2-type ions were synthesized by solid-state reaction and their luminescence properties under ultraviolet (UV) and vacuum ultraviolet (VUV) region were investigated. The results indicated that in the excitation spectrum of YBO3:5%Eu3+, the strong charge transfer (CT) band of Eu3+ was located in the UV region and the absorption band of the host lattice lay in the VUV region. When the ns2-type ions, such as Sn2+ and Sb3+(n=5), Tl+, Pb2+ and Bi3+(n=6) were co-doped into the host lattice of YBO3:5%Eu3+, the CTS band of Eu3+ was shifted. The intensity of the host lattice absorption band was improved with the incorporation of Tl+, Pb2+ or Bi3+, while decreased with Sn2+ or Sb3+. These luminescent phenomena were analyzed in detail and possible reasons were given.

Fabrication and Properties of Zinc Silicate Phosphors through Solid State Reaction

2010 ◽  
Vol 160-162 ◽  
pp. 594-598
Author(s):  
Guo Jian Jiang ◽  
Jia Yue Xu ◽  
Hui Shen ◽  
Yan Zhang ◽  
Lin He Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Emission Peak ◽  
Zinc Silicate ◽  
Red Phosphor ◽  
Reaction Method ◽  
Long Afterglow ◽  
Luminescent Mechanism ◽  
Silicate Phosphors

Zinc silicate-based (Zn2SiO4:Eu3+) long afterglow phosphors were produced by solid state reaction method. The effects of borax and Eu2O3 additive on the properties of fabricated products have been studied. The results show that, there is not much difference in phase compositions within the borax additive amount; however, their SEM morphologies are different. Borax additive can increase the grain size of the product. Some sintering phenomena could be observed in the sample with Eu2O3 addition. The fluorescence spectroscopy results indicate that, the emission peak of the sample with Eu3+ additive located at 612nm, which may be a good candidate for red phosphor applications. The luminescent mechanism of Zn2SiO4:Eu3+ is also discussed.

Study of the structural and luminescent properties of Ce3+ and Eu3+ co-doped YAG synthesized by solid state reaction

Optik ◽  
2018 ◽  
Vol 158 ◽  
pp. 152-163 ◽  
Author(s):  
Munirah A. Almessiere ◽  
Naser M. Ahmed ◽  
I. Massoudi ◽  
Amal L. Al-Otaibi ◽  
Amal A. Al-shehri ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Luminescent Properties ◽  
Co Doped

Enhanced green upconversion photoluminescence from Ho3+/Yb3+ co-doped CaZrO3 phosphor via Mg2+ doping

RSC Advances ◽  
2016 ◽  
Vol 6 (114) ◽  
pp. 113469-113477 ◽  
Author(s):  
A. Maurya ◽  
R. S. Yadav ◽  
R. V. Yadav ◽  
S. B. Rai ◽  
A. Bahadur
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
Upconversion Photoluminescence ◽  
Co Doped

This paper reports enhanced green upconversion photoluminescence from Ho3+/Yb3+ co-doped CaZrO3 phosphor via Mg2+ doping synthesized through a solid state reaction method.

Luminescence of SrY2O4:Eu3+ associated with defects

2010 ◽  
Vol 25 (11) ◽  
pp. 2120-2124 ◽  
Author(s):  
Jia Zhang ◽  
Yuhua Wang
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Vacuum Ultraviolet ◽  
Sol Gel ◽  
Blue Emission ◽  
Solid State Reaction Method ◽  
Excitation Spectra ◽  
Blue Emission Band ◽  
Gel Method ◽  
Sol Gel Method

SrY2O4:Eu3+ phosphors were synthesized by both the solid-state reaction method and the sol-gel method, and their photoluminescence in vacuum ultraviolet (VUV) and the ultraviolet (UV) region were evaluated. The excitation spectra of SrY2O4:Eu3+ phosphors prepared by solid-state reaction show another excitation band centered at 324 nm except for the charge-transfer bands (CTB) of Eu3+ when monitored at 610 nm, and a blue emission band around 406 nm is observed when excited at 324 nm, which could be associated with defects. Both the excitation and emission bands mentioned above disappear when the samples were prepared by the sol-gel method. SrY1.98O4:0.02Eu3+ phosphors synthesized by the sol-gel method exhibit a higher emission intensity under 147 nm excitation compared with solid-state reaction technology. The main reason could be that the samples prepared by the solution-based route have more regular and uniform morphologies.

Effect of B2O3 or SiO2 Fluxes on Morphology and Size of Pr-Doped CaTiO3 Phosphor Particles and on their Photoluminescence Properties

2011 ◽  
Vol 497 ◽  
pp. 31-37 ◽  
Author(s):  
Toru Kyomen ◽  
Ryuta Motani ◽  
Minoru Hanaya
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Primary Particle ◽  
Solid State Reaction Method ◽  
Particle Sizes ◽  
Photoluminescence Properties ◽  
Conventional Solid State Reaction ◽  
Red Phosphor ◽  
Reaction Method ◽  
Primary Particles

Powder of Pr-doped CaTiO3 red phosphor was prepared at 1473 K by a conventional solid-state reaction method with addition of B2O3 or SiO2 as a flux. Primary particle sizes of the prepared samples were increased by using B2O3 flux but decreased by using SiO2 flux. Clear planes, edges, or steps were observed on surfaces of the primary particles. The intensity of photoluminescence induced by irradiation of light with a wavelength longer than ∼350 nm was enhanced about three times by using B2O3 flux. The intensity of photoluminescence induced by irradiation of light with a wavelength shorter than ∼350 nm was enhanced about twice by using either B2O3 or SiO2 fluxes. The origin for the flux effects is discussed.

Synthesis of N, Fe Co-doped TiO2 Nanomaterials via Solid State Reaction and Their Photodegradation of Quinoline Irradiated under Visi-ble Light

2010 ◽  
Vol 25 (9) ◽  
pp. 921-927 ◽  
Author(s):  
Shao-You LIU ◽  
Wen-Hua TANG ◽  
Qing-Ge FENG ◽  
Ju-Zhi LI ◽  
Jian-Hua SUN
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Co Doped

scholarly journals Efficient photocatalytic degradation of gaseous acetaldehyde over ground Rh–Sb co-doped SrTiO3 under visible light irradiation

RSC Advances ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 5331-5337 ◽  
Author(s):  
Yuichi Yamaguchi ◽  
Sho Usuki ◽  
Kenji Yamatoya ◽  
Norihiro Suzuki ◽  
Ken-ichi Katsumata ◽  
...  
Keyword(s):  
Solid State ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Ball Milling ◽  
Visible Light Irradiation ◽  
Solid State Reaction ◽  
Light Irradiation ◽  
Co Doped

A visible-light-responsive Rh–Sb co-doped SrTiO3 photocatalyst (STO:Rh,Sb) via a solid-state reaction was successfully developed, following pulverization by using ball-milling.

Enhanced electrical properties of (Li,Ce) co-doped Sr(Na0.5Bi0.5)Bi4Ti5O18 high temperature piezoceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33387-33392 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Guorong Li
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Co Doped

Lead-free piezoelectric ceramics with the formula of Sr1−x(Li,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 (LCSNBT-x, x = 0.0, 0.1, 0.2, 0.3, 0.4), were prepared by a conventional solid-state reaction method.

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