Controlled synthesis and photoluminescence of europium doped barium borate nanorods, nanowires, and flower-like assemblies

Novel luminescent nanomaterials, europium (Eu 3+) doped barium borate (Ba–B–O:Eu 3+) nanorods, nanowires, and flower-like assemblies, were synthesized for the first time by a hydrothermal (HT) method. Morphologies of these Ba–B–O:Eu 3+ nanocrystals (NCs) can be controlled by adjusting oleic acid (OA...

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Published in:Colloids and surfaces. A, Physicochemical and engineering aspects Physicochemical and engineering aspects, 2010-06, Vol.363 (1), p.124-129
Main Authors: Liu, Ning, Zhao, Dan, Yu, Lianxiang, Zheng, Kezhi, Qin, Weiping
Format: Article
Language:English
Subjects:
Anisotropy
Assemblies
Borates
Chemistry
Devices
Europium
Exact sciences and technology
General and physical chemistry
Hydrothermal method
Luminescent property
Morphology
Nanocrystal
Nanorods
Nanowires
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Summary:Novel luminescent nanomaterials, europium (Eu 3+) doped barium borate (Ba–B–O:Eu 3+) nanorods, nanowires, and flower-like assemblies, were synthesized for the first time by a hydrothermal (HT) method. Morphologies of these Ba–B–O:Eu 3+ nanocrystals (NCs) can be controlled by adjusting oleic acid (OA) concentration, pH value, and reaction time. SEM and TEM observations indicate that the morphologies are determined by the anisotropic growth of the NCs and Ostwald ripening in their formations. Spectral analysis shows that the Ba–B–O:Eu 3+ NCs, especially the flower-like assemblies, have not only strong emission intensities but also high I( 5D 0 → 7F 2)/I( 5D 0 → 7F 1) ratios, which is promising for applications in displays and optical devices.
ISSN:0927-7757
1873-4359
DOI:10.1016/j.colsurfa.2010.04.028