Fabrication and Luminescent Properties of YVO4: Eu3+/MCM-41 Mesoporous Composites

2014 ◽  
Vol 707 ◽  
pp. 102-105
Author(s):  
Yi Jiang ◽  
Su Wen Li
Keyword(s):  
Hydrothermal Method ◽  
Luminescent Properties ◽  
Mesoporous Structure ◽  
Luminescence Properties ◽  
Ordered Mesoporous ◽  
Structure Morphology ◽  
Intrinsic Excitation ◽  
Mesoporous Composites ◽  
Mcm 41

The optical functionalized YVO4: Eu3+/MCM-41 mesoporous composites were prepared by hydrothermal method. The structure, morphology, luminescence properties and fluorescence dynamics were studied systemically. The compared studies of the luminescence properties of YVO4: Eu3+/MCM-41 with YVO4: Eu3+ nanocrystal were performed. The results show that the YVO4: Eu3+/MCM-41 retains high ordered mesoporous structure of MCM-41. In YVO4: Eu3+/MCM-41, the intrinsic excitation bands of Eu3+ disappears and the lifetimes of Eu3+ become short. The luminescent efficiency of YVO4: Eu3+/MCM-41 is higher than ones of the YVO4: Eu3+ nanocrystal.

scholarly journals Annealing effects on luminescent properties of Eu3+ doped Gd2Zr2O7 nanopowders

2015 ◽  
Vol 47 (3) ◽  
pp. 269-272 ◽  
Author(s):  
M.S. Rabasovic ◽  
D. Sevic ◽  
J. Krizan ◽  
M.D. Rabasovic ◽  
N. Romcevic
Keyword(s):  
Low Cost ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Combustion Method ◽  
Luminescence Properties ◽  
Camera System ◽  
Strong Emission ◽  
Structure Morphology ◽  
Annealing Effects ◽  
Size And Morphology

In this report presented are structure, morphology and luminescence properties of nanopowders based on gadolinium zirconium oxide (Gd2Zr2O7) doped by europium ions (Eu3+). The nanopowders were prepared using a flame combustion method, the most frequently used process due to the simplicity and low cost of the synthesis procedures and also due to the possibility of tailoring the size and morphology of particles. The produced material is suitable for various optical devices. The luminescence properties of synthesized nanopowders were characterized by emission spectra and luminescence lifetimes obtained by using the streak camera system. Moreover, emission spectra were obtained and compared for powders as-obtained and after additional annealing at 1200o C. Luminescence emission spectra clearly show peaks characteristic for the strong emission lines at 611 nm and 630 nm corresponding to the 5D0 ? 7F2 long lived transition.

Structure, Morphology and Luminescence Properties of Pr-Doped Nanocrystalline ZrO2 Obtained by Hydrothermal Method

2003 ◽  
Vol 94 ◽  
pp. 141-144 ◽  
Author(s):  
A. Opalińska ◽  
Dariusz Hreniak ◽  
Witold Łojkowski ◽  
Wiesław Stręk ◽  
A. Presz ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Luminescence Properties ◽  
Structure Morphology

Polyacrylamide modified mesoporous SBA-16 hybrids encapsulated with a lanthanide (Eu3+/Tb3+) complex

2015 ◽  
Vol 39 (11) ◽  
pp. 8658-8666 ◽  
Author(s):  
Ying Li ◽  
Ruidan Zhu ◽  
Jie-Lin Wang ◽  
Xia Wang ◽  
Shuang-He Liu
Keyword(s):  
Luminescent Properties ◽  
Mesoporous Structure ◽  
Ordered Mesoporous

Novel polymeric mesoporous luminescent hybrids have been synthesized by linking the binary and ternary Ln3+ complexes to polyacrylamide-functionalized mesoporous SBA-16 in situ. The excellent luminescent properties of these materials together with the highly ordered mesoporous structure will expand their applications in optical or electronic areas.

Synthesis and UC Luminescence Properties of NaYF4:Yb,Er Microsheets

2015 ◽  
Vol 1120-1121 ◽  
pp. 326-330
Author(s):  
Zi Biao Lu ◽  
Feng Tao ◽  
Zhi Jun Wang ◽  
Li Liu ◽  
Dong Cheng Ruan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrothermal Method ◽  
Emission Intensity ◽  
Great Increase ◽  
Green Emission ◽  
Luminescence Properties ◽  
Sodium Oxalate ◽  
Red Emission ◽  
Ph Values ◽  
Structure Morphology

Hexagonal NaYF4:Yb3+/Er3+ microsheets were successfully synthesized via a hydrothermal method assisted by sodium oxalate as a shape modifier. XRD, FE-SEM, TEM and SAED have been used to study the morphologies and crystal structure of the products. The effects of the pH values on the crystal structure, morphology and size were discussed. The hexagonal NaYF4:Yb3+/Er3+ microsheets show characteristic upconversion fluorescence at green (521-540 nm) and red (630-680 nm) corresponding to the 4f-4f transition of Er3+. The green and red emission intensity for microsheets has a great increase compared to that for hexagonal microspheres, and the intensity of the green emission is greater than that of the red one.

Anneal-induced transformation of phase structure, morphology and luminescence of GdPO4:Sm3+ nanomaterials synthesized by a hydrothermal method

2017 ◽  
Vol 46 (9) ◽  
pp. 2948-2956 ◽  
Author(s):  
Xiao Zou ◽  
Lihua He ◽  
Dihao Tan ◽  
Fengying Lei ◽  
Na Jiang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Hydrothermal Method ◽  
Phase Structure ◽  
Annealing Temperature ◽  
Luminescent Properties ◽  
Facile Hydrothermal Method ◽  
Structure Morphology

GdPO4·H2O:xSm3+ nanomaterials were synthesized via a facile hydrothermal method and the effects of Sm3+ concentrations and annealing temperature on the crystal structures, morphologies, and luminescent properties were studied.

Preparation of the BaF2: Ce3+, Yb3+ Nanoparticles and near Infrared Luminescent Properties

2014 ◽  
Vol 707 ◽  
pp. 98-101
Author(s):  
Su Wen Li ◽  
Yi Jiang ◽  
Shu Guang Ju
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Hydrothermal Method ◽  
Conversion Efficiency ◽  
Near Infrared ◽  
Luminescent Properties ◽  
Photoluminescence Properties ◽  
Structure Morphology

The BaF2: Ce3+, Yb3+ nanoparticles doped with different concentration were prepared by a hydrothermal method. The structure,morphology and photoluminescence properties were studied. In BaF2: Ce3+, Yb3+ nanoparticles, a strong near infrared emissionat 900 – 1050 nm matching to energy of Si band gap of Si-based solar cells was observed under the excitation of 5d level of Ce3+. As a downconversion luminescent convertor, the kinds of materials have potential to be applied in front of Si-based solar cells to reduce thermalization loss and enhance conversion efficiency of solar cells.

Hybrid materials based on novel 2D lanthanide coordination polymers covalently bonded to amine-modified SBA-15 and MCM-41: assembly, characterization, structural features, thermal and luminescence properties

2016 ◽  
Vol 45 (46) ◽  
pp. 18610-18621 ◽  
Author(s):  
Jun Wang ◽  
Wei Dou ◽  
Alexander M. Kirillov ◽  
Weisheng Liu ◽  
Cailing Xu ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Coordination Polymers ◽  
Luminescent Properties ◽  
Structural Features ◽  
Luminescence Properties ◽  
Lanthanide Coordination Polymers ◽  
Covalently Bonded ◽  
Mcm 41

A series of novel luminescent mesoporous hybrid materials was synthesized and fully characterized; their structural, thermal, and luminescent properties were investigated in detail.

Luminescent properties of Y(OH)3: Tb nanopowders synthesized by microwave-assisted hydrothermal method

2019 ◽  
Vol 21 (5) ◽  
Author(s):  
I. A. Garduño-Wilches ◽  
G. Alarcón-Flores ◽  
S. Carmona-Téllez ◽  
J. Guzmán ◽  
M. Aguilar-Frutis
Keyword(s):  
Hydrothermal Method ◽  
Luminescent Properties ◽  
Microwave Assisted
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