Ce3+ and Tb3+-doped lutetium-containing silicate phosphors: synthesis, structure refinement and photoluminescence properties

2016 ◽  
Vol 4 (16) ◽  
pp. 3443-3453 ◽  
Author(s):  
Kai Li ◽  
Sisi Liang ◽  
Hongzhou Lian ◽  
Mengmeng Shang ◽  
Bengang Xing ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Structure Refinement ◽  
Solid State Reaction Method ◽  
Photoluminescence Properties ◽  
Reaction Method ◽  
Silicate Phosphors

A series of Ce3+ and Tb3+-doped BaLu2Si3O10 (BLSO) phosphors synthesized via the high-temperature solid-state reaction method were investigated.

Photoluminescence properties of Pr3+, Sm3+ and Tb3+ doped SrAlSi4N7 and energy level locations of rare-earth ions in SrAlSi4N7

2014 ◽  
Vol 2 (37) ◽  
pp. 7952-7959 ◽  
Author(s):  
Zhi-Jun Zhang ◽  
Otmar M. ten Kate ◽  
Anneke Delsing ◽  
Pieter Dorenbos ◽  
Jing-Tai Zhao ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Solid State ◽  
Energy Level ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Rare Earth Ions ◽  
Photoluminescence Properties ◽  
Reaction Method

RE3+ (RE = Pr, Sm, and Tb)-doped SrAlSi4N7 samples were synthesized by a solid-state reaction method at high temperature, and their photoluminescence properties were investigated.

Photoluminescence Properties of Eu3+-activated Silicate Phosphors

2017 ◽  
Vol 36 (6) ◽  
pp. 635-640
Author(s):  
Esra Öztürk
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction Method ◽  
Sintering Process ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Reaction Method ◽  
X Ray ◽  
Host Lattices ◽  
Silicate Phosphors

AbstractThe silicate-type and Eu3+-activated Sr3SiO5 and Mg3SiO5 were prepared through the high temperature solid state reaction method under an open atmosphere. DTA/TG analysis was conducted to obtain information about the thermal behaviors of the mixed reactants. Using the DTA/TG results, the sintering process was achieved and the phase properties were characterized by X-ray diffraction (XRD). The effects of the same activator (Eu3+) and co-dopant (Dy3+) on the photoluminescence (PL) properties of the host lattices were investigated by using a photoluminescence spectrometer.

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.

A high temperature stable piezoelectric strain of KNN-based ceramics

2018 ◽  
Vol 6 (41) ◽  
pp. 19967-19973 ◽  
Author(s):  
Zhenyong Cen ◽  
Yu Huan ◽  
Wei Feng ◽  
Yan Yu ◽  
Peiyao Zhao ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Piezoelectric Strain

Lead-free (1 − x)(0.96K0.46Na0.54Nb0.98Ta0.02O3–0.04Bi0.5(Na0.82K0.18)0.5ZrO3)–xCaZrO3 ((1 − x)(0.96KNNT–0.04BNKZ)–xCZ) piezoelectric ceramics were prepared by the conventional solid-state reaction method.

Superconducting Compound Hg0.8Sb0.2Ba2Ca2Cu3O8+δ Compared with Hg0.8Sb0.2Ba2Ca1Cu2O6+δ to Evaluate Transition Temperature

2020 ◽  
Vol 18 (11) ◽  
pp. 14-18
Author(s):  
Abbas K. Saadon ◽  
Kareem A. Jasim ◽  
Auday H. Shaban
Keyword(s):  
High Temperature ◽  
Transition Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Hot Spot ◽  
Solid State Reaction Method ◽  
X Ray Diffraction ◽  
Reaction Method ◽  
X Ray ◽  
Superconducting Compound

The high temperature superconductor’s compounds are one of the hot spot field of science, due to their applications in industries. Hg0.8Sb0.2Ba2Ca2Cu3O8+δ and Hg0.8Sb0.2Ba2Ca1Cu2O6+δ, were manufactured using a doable-step of solid state reaction method. The samples were sintered at 800 ° C. The transition temperatures Tc are found from electrically resistively by using four probe techniques. The resistivity become zero when the transition temperature Tc(offset) have 131 and 119 K, and the onset temperature Tc(onset) have 139 K for Hg0.8Sb0.2Ba2Ca2Cu3O8+δ and 132 K for Hg0.8Sb0.2Ba2Ca1Cu2O6+δ. Analysis of X-ray diffraction showed a tetragonal structure with lattice parameters changes for all samples.

The long persistent luminescence properties of phosphors: Li2ZnGeO4 and Li2ZnGeO4:Mn2+

RSC Advances ◽  
2014 ◽  
Vol 4 (22) ◽  
pp. 11360-11366 ◽  
Author(s):  
Yahong Jin ◽  
Yihua Hu ◽  
He Duan ◽  
Li Chen ◽  
Xiaojuan Wang
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Luminescence Properties ◽  
Persistent Luminescence ◽  
Reaction Method

The blue emitting long persistent phosphor (LPP) Li2ZnGeO4 and green emitting LPP Li2ZnGeO4:Mn2+ were newly prepared by a high temperature solid-state reaction method.

Photoluminescence properties of single-component white-emitting Ca9Bi(PO4)7:Ce3+,Tb3+,Mn2+phosphors for UV LEDs

2015 ◽  
Vol 3 (27) ◽  
pp. 7096-7104 ◽  
Author(s):  
Kai Li ◽  
Mengmeng Shang ◽  
Yang Zhang ◽  
Jian Fan ◽  
Hongzhou Lian ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
White Light ◽  
Solid State Reaction Method ◽  
Photoluminescence Properties ◽  
Light Emitting ◽  
Reaction Method ◽  
White Light Emitting Diodes ◽  
Uv Leds ◽  
Uv Excitation

A series of Ca9Bi(PO4)7:Ce3+,Tb3+,Mn2+phosphors synthesizedviathe high-temperature solid-state reaction method can emit intense tunable color from purple-blue to red including white under UV excitation, which shows their potential application in UV-pumped white-light-emitting diodes.

Effects of Sm3+ Doping on the Photoluminescence Properties of Ca9Eu1-xSmx(VO4)7 Red-Emitting Phosphors

2012 ◽  
Vol 512-515 ◽  
pp. 1488-1493 ◽  
Author(s):  
Li Hong Liu ◽  
Rong Jun Xie ◽  
Xu Dong Sun ◽  
Qing Huang ◽  
Naoto Hirosaki
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Excitation Energy ◽  
Solid State Reaction ◽  
Emission Intensity ◽  
Solid State Reaction Method ◽  
Photoluminescence Properties ◽  
Reaction Method ◽  
White Leds ◽  
Uv Led

This paper reports the photoluminescence properties of Ca9Eu1-xSmx(VO4)7 (x=0.2-0.4) synthesized at 1250 oC in air for 12 h using traditional solid-state reaction method. With the increase of Sm3+ substitution amount, purity Ca9Eu1-xSmx(VO4)7 phase was obtained even when the Eu3+ ions were totally substituted by Sm3+. The experimental results showed that when Sm3+ was codoped with Eu3+ into Ca9Eu1-xSmx(VO4)7 crystal structure, Sm3+ would act as a sensitizer and transfer the excitation energy to Eu3+ ions and finally enhance the emission intensity of Ca9Eu1-xSmx(VO4)7 under 405 nm excitation, which leads to more favorite of this kind of phosphor used in UV LED based white LEDs.

scholarly journals Size-dependent optical and thermochromic properties of Sm3Fe5O12

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37765-37770 ◽  
Author(s):  
Huanhuan Liu ◽  
Long Yuan ◽  
Hui Qi ◽  
Yanyan Du ◽  
Shan Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Solid State Reaction Method ◽  
Inorganic Materials ◽  
Particle Sizes ◽  
Reaction Method ◽  
Size Dependent ◽  
Thermochromic Properties

Reversible thermochromic inorganic materials of Sm3Fe5O12with different particle sizes have been synthesized by a conventional high temperature solid state reaction method (2.51 μm) and sol–gel method (0.16 μm).

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.

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