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Author Rao, Ling ♦ Lu, Wei ♦ Wang, Haibo ♦ Yi, Zhigao ♦ Zeng, Songjun ♦ Li, Zheng
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ BARIUM COMPOUNDS ♦ DOPED MATERIALS ♦ FLUORIDES ♦ FLUORINE COMPOUNDS ♦ GADOLINIUM ADDITIONS ♦ HYDROTHERMAL SYNTHESIS ♦ LUMINESCENCE ♦ LUTETIUM COMPOUNDS ♦ NANOPARTICLES ♦ NANOSTRUCTURES ♦ OPTICAL PROPERTIES ♦ SHAPE ♦ SPECTRA ♦ TERBIUM COMPOUNDS ♦ THULIUM ADDITIONS ♦ TRANSMISSION ELECTRON MICROSCOPY ♦ X-RAY DIFFRACTION
Abstract Highlights: • Sub-10 nm cubic phase BaLuF{sub 5} nanocrystals were synthesized by a hydrothermal method for the first time. • Tunable multicolor from yellow to yellow-green was achieved by controlling Gd{sup 3+} content in BaLuF{sub 5}:Yb/Er system. • Intense near-infrared upconversion luminescence in BaLuF{sub 5}:Gd/Yb/Tm nanocrystal. • The enhancement near-infrared luminescence can be realized by adjusting the content of Gd{sup 3+} in BaLuF{sub 5}:Gd/Yb/Tm system. - Abstract: In this study, sub-10 nm BaLuF{sub 5} nanocrystals with cubic phase structure were synthesized by a solvothermal method using oleic acid as the stabilizing agent. The as-prepared BaLuF{sub 5} nanocrystals were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and analyzed by the upconversion (UC) spectra. The TEM results reveal that these samples present high uniformity. Compared with Gd-free samples, the size of BaLuF{sub 5}:Yb/Er doped with 10% Gd{sup 3+} decreased to 5.6 nm. In addition, BaLuF{sub 5}:Yb/Tm/Gd upconversion nanoparticles (UCNPs) presented efficient near-infrared (NIR)-NIR UC luminescence. Therefore, it is expected that these ultra-small BaLuF{sub 5} nanocrystals with well-controlled shape, size, and UC emission have potential applications in biomedical imaging fields.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-04-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 64


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