Wan, Neng and Lin, Tao and Xu, Jun and Xu, Ling and Chen, Kunji (2008) Preparation and luminescence of nano-sized In2O3 and rare-earth co-doped SiO2 thin films. NANOTECHNOLOGY, 19 (9).
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Official URL: http://www.iop.org/EJ/abstract/0957-4484/19/9/0957...
The sol - gel method was used to prepare SiO2 thin films co- doped with In2O3 nano- particles and Eu3+. The formation of nano- sized In2O3 particles after annealing at 900 degrees C was confirmed by the x- ray diffraction technique. A novel phase transition from a hexagonal rhombic centered to a body centered cubic structure of In2O3 nano- particles was observed at around 1100 degrees C. It is found that the particle size and the particle density of In2O3 can be tuned by changing the annealing temperature and the indium doping concentration, respectively. The characteristic emission bands from Eu3+ ions can be observed at room temperature and the luminescence intensity is increased 20 times by introducing In2O3 nano- particles into Eu3+- doped silica films. The integrated luminescence intensity was gradually enhanced by increasing the In3+ concentration, suggesting effective energy transfer from nano- sized In2O3 to Eu3+ ions.
|Uncontrolled Keywords:||GLASS; SPECTROSCOPY|
|Subjects:||Material Science > Nanofabrication processes and tools|
|Deposited On:||25 Sep 2009 09:36|
|Last Modified:||25 Sep 2009 09:36|
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