期刊
DALTON TRANSACTIONS
卷 41, 期 45, 页码 13984-13988出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2dt31610b
关键词
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资金
- Innovation Program of the Shanghai Municipal Education Commission [10YZ70, 09ZZ136]
- Science Foundation of Shanghai Normal University [SK201002]
- Shanghai Science and Technology Development Fund [11ZR1426500]
Uniform Gd2O2S flower-like nano-assemblies were prepared through one-pot mild solvothermal synthesis. The parallel nanoplates are the building blocks, similar to 3 nm in thickness and 20-30 in diameter. Ethanediamine, the main solvent, plays an important role in dissolving a large amount of sulphur and producing active S2- ions, which results in the direct formation of Gd2O2S. Oleylamine, the capping agent, controls the growth of the plate-like structure. Under UV excitation, the Gd2O2S:Eu3+ nano-phosphor shows good red luminescence with a main emission peak at 627 nm. Under 980 nm laser excitation, Gd2O2S:xYb(3+), 1%Er3+ nano-phosphors exhibit a tuneable emission, shifting from greenish-yellow to orange-yellow, with increasing Yb3+ content.
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