Investigation on YF3:Eu3+ architectures and their luminescence properties

CrystEngComm ◽  
2015 ◽  
Vol 17 (43) ◽  
pp. 8242-8247 ◽  
Author(s):  
Longxiang Yan ◽  
Wei Gao ◽  
Qinyan Han ◽  
Xiaoyi Li ◽  
Ruibo Wang ◽  
...  
Keyword(s):  
Luminescence Properties ◽  
Calcination Temperatures

The changeable matrix under different calcination temperatures leads to tunable luminescence properties.

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

Improvement of Ti/RuO2–IrO2 Anode Lifetime and Electrocatalytical Properties by Using an Eco-Friendly Thermal Decomposition Method Using Polyvinyl Alcohol as Solvent

2019 ◽  
Author(s):  
Charlys Bezerra ◽  
Géssica Santos ◽  
Marilia Pupo ◽  
Maria Gomes ◽  
Ronaldo Silva ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Polyvinyl Alcohol ◽  
High Efficiency ◽  
Electrochemical Impedance ◽  
Pechini Method ◽  
Low Cost ◽  
Charge Transfer Resistance ◽  
Transfer Resistance ◽  
Calcination Temperatures ◽  
Service Lifetime

<p>Electrochemical oxidation processes are promising solutions for wastewater treatment due to their high efficiency, easy control and versatility. Mixed metal oxides (MMO) anodes are particularly attractive due to their low cost and specific catalytic properties. Here, we propose an innovative thermal decomposition methodology using <a>polyvinyl alcohol (PVA)</a> as a solvent to prepare Ti/RuO<sub>2</sub>–IrO<sub>2</sub> anodes. Comparative anodes were prepared by conventional method employing a polymeric precursor solvent (Pechini method). The calcination temperatures studied were 300, 400 and 500 °C. The physical characterisation of all materials was performed by X-ray diffraction and scanning electron microscopy coupled with energy dispersive spectroscopy, while electrochemical characterisation was done by cyclic voltammetry, accelerated service lifetime and electrochemical impedance spectroscopy. Both RuO<sub>2</sub> and IrO<sub>2</sub> have rutile-type structures for all anodes. Rougher and more compact surfaces are formed for the anodes prepared using PVA. Amongst temperatures studied, 300 °C using PVA as solvent is the most suitable one to produce anodes with expressive increase in voltammetric charge (250%) and accelerated service lifetime (4.3 times longer) besides reducing charge-transfer resistance (8 times lower). Moreover, the electrocatalytic activity of the anodes synthesised with PVA toward the Reactive Blue 21 dye removal in chloride medium (100 % in 30 min) is higher than that prepared by Pechini method (60 min). Additionally, the removal total organic carbon point out improved mineralisation potential of PVA anodes. Finally, this study reports a novel methodology using PVA as solvent to synthesise Ti/RuO<sub>2</sub>–IrO<sub>2</sub> anodes with improved properties that can be further extended to synthesise other MMO compositions.</p>

Luminescence properties of Bi3+ doped Lu1-xO3: x%Ho3+ metal ion phosphors

2020 ◽  
Vol 13 (6) ◽  
pp. 1-9
Author(s):  
ZHAO Hai-qin ◽  
◽  
WANG Lin-xiang ◽  
TUO Juan ◽  
YE Ying ◽  
...  
Keyword(s):  
Metal Ion ◽  
Luminescence Properties

Preparation and Luminescence Properties of Eu3+ Doped Germanate Glass Ceramics Containing CaF2 Nanocrystals

2020 ◽  
Vol 41 (10) ◽  
pp. 1234-1240
Author(s):  
Li-hui HUANG ◽  
◽  
Jing-tao ZHAO ◽  
Shi-long ZHAO ◽  
Shi-qing XU
Keyword(s):  
Glass Ceramics ◽  
Luminescence Properties ◽  
Germanate Glass

Luminescence properties of Bi3+ doped Lu1-xO3: x%Ho3+ metal ion phosphors

2020 ◽  
Vol 13 (6) ◽  
pp. 1-9
Author(s):  
ZHAO Hai-qin ◽  
◽  
WANG Lin-xiang ◽  
TUO Juan ◽  
YE Ying ◽  
...  
Keyword(s):  
Metal Ion ◽  
Luminescence Properties
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