scholarly journals Synthesis and Luminescence Properties of (Y, Gd) (P, V)O4:Eu3+, Bi3+Red Nano-phosphors with Enhanced Photoluminescence by Bi3+, Gd3+ Doping

2013 ◽  
Vol 5 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Yong Pu ◽  
Ke Tang ◽  
Da-Chuan Zhu ◽  
Tao Han ◽  
Cong Zhao ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Enhanced Photoluminescence

scholarly journals Plasmon-enhanced photoluminescence from TiO2 and TeO2 thin films doped by Eu3+ for optoelectronic applications

2021 ◽  
Vol 12 ◽  
pp. 1271-1278
Author(s):  
Marcin Łapiński ◽  
Jakub Czubek ◽  
Katarzyna Drozdowska ◽  
Anna Synak ◽  
Wojciech Sadowski ◽  
...  
Keyword(s):  
Thin Films ◽  
Emission Spectra ◽  
Rf Magnetron Sputtering ◽  
Gold Nanostructures ◽  
Luminescence Properties ◽  
Plasmonic Nanostructures ◽  
White Leds ◽  
Enhanced Photoluminescence ◽  
Gold Thin Film ◽  
New Type

In this work we study the luminescence properties of europium-doped titanium dioxide and tellurium oxide thin films enhanced by gold plasmonic nanostructures. We propose a new type of plasmon structure with an ultrathin dielectric film between plasmonic platform and luminescent material. Plasmonic platforms were manufactured through thermal annealing of the gold thin film. Thermal dewetting of gold film results in spherical gold nanostructures with average dimensions of 50 nm. Both, luminescent TiO2:Eu and TeO2:Eu films were deposited by RF magnetron sputtering from mosaic targets. The morphology of the gold nanostructures was investigated by SEM and TEM, while the composition of oxides film was analyzed by XPS. Luminescence properties were studied on the basis of excitation and emission spectra. The experiments show that the additional dielectric layer enhances the luminescence intensity. Such structures could be potential candidates as phosphors in white LEDs.

Physiochemical properties of greatly enhanced photoluminescence of aqueous dispersible upconversion CaF2:Yb/Er nanoparticles

2017 ◽  
Vol 16 (6) ◽  
pp. 890-896 ◽  
Author(s):  
Anees A. Ansari ◽  
Ranvijay Yadav ◽  
S. B. Rai
Keyword(s):  
Metal Complex ◽  
Surface Coating ◽  
Luminescence Properties ◽  
Upconversion Nanoparticles ◽  
Physiochemical Properties ◽  
Enhanced Photoluminescence ◽  
Silica Layers

Highly aqueous soluble CaF2:Yb/Er@CaF2@SiO2 upconversion nanoparticles were prepared via metal complex decomposition rout. Gradually surface coating with an inert CaF2 and silica layers greatly enhanced their optical and luminescence properties, which are highly usable for luminescent biolabeling or optical bio-probe etc.

Impact of LaF3 and silica shell formation on the crystal, optical and photo-luminescence properties of LaF3:Ce/Tb nanoparticles

2017 ◽  
Vol 1 (4) ◽  
pp. 727-734 ◽  
Author(s):  
Anees A. Ansari ◽  
Monika Rai ◽  
S. B. Rai
Keyword(s):  
Epitaxial Growth ◽  
Amorphous Silica ◽  
Photo Luminescence ◽  
Silica Shell ◽  
Polyol Process ◽  
Luminescence Properties ◽  
Shell Formation ◽  
Enhanced Photoluminescence ◽  
High Dispersibility

A new LaF3:Ce/Tb nanoparticle designed via a polyol process shows high dispersibility in aqueous solvents with enhanced photoluminescence. The epitaxial growth of an inert LaF3 shell and further amorphous silica, respectively, enhanced their optical and luminescence properties, which is highly usable in luminescence biolabeling, optical bio-probes, etc.

Luminescence from individual dislocations in II-VI and III-V semiconductors

1991 ◽  
Vol 49 ◽  
pp. 834-835
Author(s):  
J W Steeds
Keyword(s):  
Group Iv ◽  
Luminescence Properties ◽  
Carrier Recombination ◽  
Transmission Electron ◽  
Wide Range ◽  
Basic Physics ◽  
Semiconducting Compounds ◽  
Diamond Group ◽  
Non Destructive ◽  
Technological Significance

There is a wide range of experimental results related to dislocations in diamond, group IV, II-VI, III-V semiconducting compounds, but few of these come from isolated, well-characterized individual dislocations. We are here concerned with only those results obtained in a transmission electron microscope so that the dislocations responsible were individually imaged. The luminescence properties of the dislocations were studied by cathodoluminescence performed at low temperatures (~30K) achieved by liquid helium cooling. Both spectra and monochromatic cathodoluminescence images have been obtained, in some cases as a function of temperature.There are two aspects of this work. One is mainly of technological significance. By understanding the luminescence properties of dislocations in epitaxial structures, future non-destructive evaluation will be enhanced. The second aim is to arrive at a good detailed understanding of the basic physics associated with carrier recombination near dislocations as revealed by local luminescence properties.

Effect of annealing temperature on luminescence properties of ZnWO 4 :Eu 3+ nanophosphor

2019 ◽  
Vol 14 (5) ◽  
pp. 496-500 ◽  
Author(s):  
Chunyang Li ◽  
Xiaodi Du ◽  
Yurong Shi ◽  
Zhenling Wang
Keyword(s):  
Annealing Temperature ◽  
Luminescence Properties

Growth and Thermo-luminescence Properties of Dy: Bi$lt;inf$gt;4$lt;/inf$gt;Si$lt;inf$gt;3$lt;/inf$gt;O$lt;inf$gt;12$lt;/inf$gt; Crystals

2016 ◽  
Vol 31 (10) ◽  
pp. 1068 ◽  
Author(s):  
WANG Mei-Ling ◽  
XU Jia-Yue ◽  
ZHANG Yan ◽  
CHU Yao-Qing ◽  
YANG Bo-Bo ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Thermo Luminescence

SPECTRAL LUMINESCENCE PROPERTIES OF CdS NANOCOMPOSITES IN A POLYMER SHELL

2017 ◽  
Vol 8 (2) ◽  
pp. 171-180
Author(s):  
Dm. A. Pomogailo ◽  
M. G. Spirin ◽  
V. M. Skobeeva ◽  
G. I. Dzhardimalieva ◽  
S. I. Pomogailo ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Polymer Shell ◽  
Cds Nanocomposites ◽  
Spectral Luminescence
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