Luminescence Properties of SnO2 Nanoparticles Dispersed in Eu3+ Doped SiO2 Matrix

2008 ◽  
Vol 8 (3) ◽  
pp. 1489-1493 ◽  
Author(s):  
R. S. Ningthoujam ◽  
V. Sudarsan ◽  
A. Vinu ◽  
P. Srinivasu ◽  
K. Ariga ◽  
...  
2015 ◽  
Vol 44 (14) ◽  
pp. 6457-6465 ◽  
Author(s):  
Laishram Priyobarta Singh ◽  
Ningthoujam Premananda Singh ◽  
Sri Krishna Srivastava

SnO2:5Tb (SnO2 doped with 5 at% Tb3+) nanoparticles were synthesised by a polyol method and their luminescence properties at different annealing temperatures were studied.


2003 ◽  
Vol 372 (3-4) ◽  
pp. 451-454 ◽  
Author(s):  
Feng Gu ◽  
Shu Fen Wang ◽  
Chun Feng Song ◽  
Meng Kai Lü ◽  
Yong Xin Qi ◽  
...  

2008 ◽  
Vol 8 (3) ◽  
pp. 1489-1493 ◽  
Author(s):  
R. S. Ningthoujam ◽  
V. Sudarsan ◽  
A. Vinu ◽  
P. Srinivasu ◽  
K. Ariga ◽  
...  

SnO2 nanoparticles dispersed in Eu3+ doped silica (SnO2-SiO2:Eu3+) were prepared at a low temperature (185 °C) in ethylene glycol medium. Transmission electron microscopy studies on as-prepared samples have established that SnO2 nanoparticles having size of 4.6 nm are uniformly covered by the SiO2 matrix. Significant extent of exciton mediated energy transfer between SnO2 and Eu3+ ions in heat treated SnO2-SiO2:Eu3+ samples has been attributed to the diffusion of Eu3+ ions from the SiO2 matrix to the near vicinity of SnO2 nanoparticles and its incorporation in the SnO2 matrix. On the other hand, very weak energy transfer exists for SnO2:Eu3+ nanoparticles heated at different temperatures due to the phase segregation of Eu3+ ions from the matrix.


2009 ◽  
Vol 58 (8) ◽  
pp. 5821
Author(s):  
Lin Tao ◽  
Wan Neng ◽  
Han Min ◽  
Xu Jun ◽  
Chen Kun-Ji

Author(s):  
J W Steeds

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.


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

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

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