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- Title
Highly stable Si-N-doped BaMgAl<sub>10</sub>O<sub>17</sub>:Eu phosphor prepared by EuSi<sub>2</sub>O<sub>2</sub>N<sub>2</sub> incorporation: structure and luminescence properties.
- Authors
Zhu, Qiang-Qiang; Xu, Xin; Hao, Lu-Yuan
- Abstract
Partial replacement of some Al-O pairs in BaMgAl10O17:Eu2+ (BAM:Eu) phosphor with Si-N pairs has been proven to be one potential way to achieve products with high thermal stability. However, in most situations, the effect of Si-N incorporation is unsatisfactory because of the poor reactivity of the Si3N4 used as the raw material. Herein, a Si-N-doped BaMgAl10O17:Eu2+ (BAM:Eu) phosphor has been successfully prepared by using EuSi2O2N2 as a raw material; the strong covalent bonds of Eu-N and Si-N in EuSi2O2N2 are beneficial for Si-N incorporation and the coordination of Eu with nitrogen in the BAM structure. The effects of EuSi2O2N2 incorporation on the structure and luminescence properties of the resulting phosphors were investigated. The Si-N doped BAM:Eu phosphor shows a crystal lattice shrinkage, and the interaction between Eu2+ and the coordination environment is improved. The N3− coordination with Eu2+ also shifts the emission wavelength of the BAM:Eu phosphor to longer wavelengths. Moreover, the Si-N incorporation improves the thermal quenching property and the thermal stability of the resulting BAM:Eu product by modifying the local structure.
- Subjects
LUMINESCENCE; PHOSPHORS; LUMINESCENCE spectroscopy; CRYSTAL lattices; COVALENT bonds; THERMAL stability
- Publication
Journal of Materials Science: Materials in Electronics, 2018, Vol 29, Issue 8, p6428
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-018-8623-1