期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 6, 期 15, 页码 4217-4224出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc00165k
关键词
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资金
- Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation (Climbing Program Special Funds)
- RFBR [17-52-53031]
- Guangzhou Science & Technology Projects [201605030005, 201704030086]
- Project for Construction of High-level University in Guangdong Province - Guangdong Natural Science Foundation [S2013030012842]
- National Natural Science Foundation of China [21671070]
Herein, Mn4+-activated Ca1-xYxAl12-xMgxO19 (x = 0-0.50) solid solutions were prepared using a conventional high-temperature solid-state reaction. Crystal structure transformation via chemical co-substitution of Y3+/Mg2+ for Ca2+/Al3+ was investigated in detail. The optical properties of Ca1-xYxAl12-xMgxO19 (x = 0-0.50) have been reported for the first time using a combination of techniques including structural refinement and luminescence measurements. Co-doping of Mg and Y cations within the CaAl12O19 host in a controlled manner resulted in the as-prepared samples with red/far-red ratio-tunable luminescence properties. The emission bands well-matched with the absorption band of phytochrome. Interestingly, enhanced Mn4+ luminescence can be obtained upon the addition of Mg2+ and Y3+. Unexpectedly, the quantum yields exhibit a slight change when x is in the range from 0.05 to 0.40; this indicates that these solid solutions have significant potential as lighting systems for plant growth.
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