Synthesis and luminescence properties of YInGe2O7 phosphors activated by dysprosium ions
| Autor: | Yee-Shin Chang, Pin-Lun Dai, Hao-Long Chen, Yeou-Yih Tsai, Bin-Siang Tsai, Kun-Hou Liao, Te-Hua Fang |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Photoluminescence
business.industry Organic Chemistry Analytical chemistry chemistry.chemical_element Phosphor Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Ion Inorganic Chemistry Optics chemistry Dysprosium Light emission Emission spectrum Electrical and Electronic Engineering Physical and Theoretical Chemistry Luminescence business Spectroscopy Monoclinic crystal system |
| Zdroj: | Optical Materials. 32:392-397 |
| ISSN: | 0925-3467 |
| DOI: | 10.1016/j.optmat.2009.09.011 |
| Popis: | The Dy3+-doped YInGe2O7 phosphor was synthesized by solid-sate reaction and calcined at 1300 °C for 10 h in air. The structure and optical properties of YInGe2O7:Dy3+ phosphors have been investigated. XRD results indicated that all of the diffraction peaks can be attributed to the monoclinic YInGe2O7 phase when the Dy3+ ion concentration is increased up to 40 mol%. In the photoluminescence studies, under ultraviolet (349 nm) excitation, the emission spectrum exhibited a weak group of peak for 4M21/24I13/2 + 4K17/2 + 4F7/2 → 6H13/2 at 453 nm, and two groups of strong peak at 484 nm and 574 nm due to the 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transition of Dy3+ ions, respectively. The optimum concentration for the Dy3+ luminescence is about 10 mol%, indicating that the concentration quenching effect is active when the Dy3+ ion concentration is larger than 10 mol%. The CIE color coordinate of emission is at x = 0.3031 and y = 0.3251, which is located in the near-white light emission region. |
| Databáze: | OpenAIRE |
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