Luminescent properties of Eu3+-doped YTaO4 powders
| Autor: | Min Ha Hwang, Young Jin Kim |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Flux method
Excitation wavelength Materials science Photoluminescence Process Chemistry and Technology Doping Analytical chemistry Flux Mineralogy Surfaces Coatings and Films Electronic Optical and Magnetic Materials Heating temperature Materials Chemistry Ceramics and Composites Luminescence Intensity (heat transfer) |
| Zdroj: | Ceramics International. 34:1117-1120 |
| ISSN: | 0272-8842 |
| Popis: | YTaO 4 :Eu 3+ powders were synthesized by a flux method with LiCl. The use of a flux in the synthesis of M′–YTaO 4 facilitated the reaction of raw materials, leading to lowering the heating temperature, but not effective at the high firing temperature. The red emission peaks were observed around 613 nm with an excitation wavelength of 254 nm. Emission peaks were composed of two sets around 613 nm and 590 nm, which originated from 5 D 0 – 7 F 2 and 5 D 0 – 7 F 1 , respectively. PL intensity of YTaO 4 :Eu 3+ prepared with a small amount of LiCl (10 wt%) significantly depended on the firing temperatures, while that with a larger amount of LiCl (40 wt%) slightly relied on firing temperatures. The highest PL intensity could be obtained at the firing conditions of 1300 °C and 10 wt% LiCl. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect