Luminescence and structural properties of oxyorthosilicate and Al2O3 nanophosphors
- Los Alamos National Laboratory
- OK STATE
A large amount of research has been conducted on semiconducting quantum dots exploring quantum confinement effects. On the other hand, nanophosphors -- inorganic insulating nanostructured luminescent materials -- have received considerably less attention. Our research involving nanomaterials has then focused on the question: How does reduced dimensionality affect the physical and chemical behavior of nanophosphors? In order to partially answer this fundamental question, we have produced numerous oxides, among them Lu{sub 2}SiO{sub 5}Ce (LSO), Y{sub 2}SiO{sub 5}:Ce (YSO), Gd{sub 2}SiO{sub 5}:Ce (GSO), and Al{sub 2}O{sub 3}, and characterized their structural and luminescent properties. Structure, grain size, phase purity and chemical homogeneity in the nanoscale were determined using x-ray diffraction, transmission electron microscopy, and electron paramagnetic resonance. The luminescent properties of the nanophosphors were characterized by thermoluminescence, radioluminescence, photoluminescence, and optically stimulated luminescence. In this work, we present an overview of the nascent field of nanophosphors, and summarize the results obtained in our laboratory with particular emphasis on the luminescent properties.
- Research Organization:
- Los Alamos National Laboratory (LANL)
- Sponsoring Organization:
- DOE
- DOE Contract Number:
- AC52-06NA25396
- OSTI ID:
- 960506
- Report Number(s):
- LA-UR-08-05114; LA-UR-08-5114
- Journal Information:
- Physics Status Solidi C, Journal Name: Physics Status Solidi C; ISSN PSSCGL; ISSN 1610-1634
- Country of Publication:
- United States
- Language:
- English
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