Preparation and Luminescence Properties of Dy3+ Doped Sr3Lu(PO4)3 as a New Single Phase White Light Emitting Phosphor
| Autor: | Zai Fa Yang, Xue Dong Gao, Jiang Nan Du, Jia Yue Sun, Deng Hui Xu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
business.industry
Chemistry Mechanical Engineering Doping Analytical chemistry Phosphor 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Mechanics of Materials Activator (phosphor) White light Optoelectronics General Materials Science Chromaticity Single phase 0210 nano-technology Luminescence business Excitation |
| Zdroj: | Key Engineering Materials. 727:612-617 |
| ISSN: | 1662-9795 |
| DOI: | 10.4028/www.scientific.net/kem.727.612 |
| Popis: | The novel white light emitting phosphors Sr3Lu(1-x)Dyx(PO4)3 (x = 0.02, 0.04, 0.06, 0.08, 0.10) were synthesized via a conventional high-temperature solid-state reaction method at 1250°C. The excitation spectrum indicated that these phosphors had a strong absorption in near UV region in the range from 260 to 460 nm. And under 350 nm excitation, the blue emission at 483nm (4F9/2→6H15/2) and yellow emission at 576 nm (4F9/2→6H13/2) were observed in the phosphors, respectively. We studied the effect of different doping concentrations of Dy3+ activator on the luminescence properties and found that the optimum doping concentration is 6 mol%. According to the Dexter’s theory, this quenching behavior is ascribed to be electric d-d interaction. Furthermore, the chromaticity coordinate (x = 0.28, y = 0.32) of Sr3Lu (PO4)3:0.06Dy3+ phosphor was very close to the “ideal white” (x = 0.33, y = 0.33) in the chromaticity diagram. Our results indicate that the Sr3Lu (PO4)3:Dy3+ phosphor can serve as a promising candidate for single-component white light emitting phosphor under near UV excitation. |
| Databáze: | OpenAIRE |
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