| Autor: |
Kaur, Jagjeet, Dubey, Vikas, Parganiha, Yogita, Singh, Deepti, Suryanarayana, N. |
| Předmět: |
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| Zdroj: |
Research on Chemical Intermediates; Jun2015, Vol. 41 Issue 6, p3597-3621, 25p, 2 Black and White Photographs, 2 Diagrams, 3 Charts, 3 Graphs |
| Abstrakt: |
In this paper we review the luminescence properties of Pr-doped CaTiO phosphors, the different methods of sample preparation, and characterization of the materials by use of different techniques, for example X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermo-gravimetric analysis, and atomic force microscopy. Solid-state, sol-gel (SG), and combustion methods are most often used for preparation. The high calcining temperature of the solid-state method can be reduced by addition of rare earth oxides (lanthanide series) LnO and LuO. By use of tetra- n-butyl titanates and calcium nitrates as raw material in the modified solid-state method the luminous properties of samples can be optimized at lower sintering temperatures (600 °C) in less time. SG procedures lead to substantial reinforcement of red photoluminescence intensity so can be regarded as the best technique for phosphor preparation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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