TY - JOUR
T1 - Controlled synthesis and optical properties of BaFBr:Eu 2+ crystals via ethanol/water solutions
AU - Liang, Qinghua
AU - Li, Zhi
AU - Ma, Wangjing
AU - Shi, Yao
AU - Yang, Xinmin
PY - 2012/9
Y1 - 2012/9
N2 - BaFBr:Eu 2+ crystals with different structures were successfully fabricated via a simple precipitation method using ethanol/water mixtures as solvents. The amount of ethanol in the solvent mixtures played a significant role in the formation of final products, enabling the well-controlled growth of the BaFBr crystals. A possible formation mechanism was proposed based on the results of controlled experiments. The phases and morphologies of the resulting samples were systematically investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected area electron diffraction (SAED) and elementary analysis. The optical properties of the annealed BaFBr:Eu 2+ nano-cuboids were investigated using photoluminescence (PL), photo-stimulated luminescence spectroscopy (PSL) and kinetic decays. Faster decay behaviors demonstrate that these BaFBr:Eu 2+ phosphors are promising materials for applications in optical storage fields. Furthermore, it is envisaged that this environmentally benign method can be extended to prepare other fluoride halides.
AB - BaFBr:Eu 2+ crystals with different structures were successfully fabricated via a simple precipitation method using ethanol/water mixtures as solvents. The amount of ethanol in the solvent mixtures played a significant role in the formation of final products, enabling the well-controlled growth of the BaFBr crystals. A possible formation mechanism was proposed based on the results of controlled experiments. The phases and morphologies of the resulting samples were systematically investigated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), selected area electron diffraction (SAED) and elementary analysis. The optical properties of the annealed BaFBr:Eu 2+ nano-cuboids were investigated using photoluminescence (PL), photo-stimulated luminescence spectroscopy (PSL) and kinetic decays. Faster decay behaviors demonstrate that these BaFBr:Eu 2+ phosphors are promising materials for applications in optical storage fields. Furthermore, it is envisaged that this environmentally benign method can be extended to prepare other fluoride halides.
KW - A. Optical materials
KW - B. Chemical synthesis
KW - C. X-ray diffraction
KW - D. Optical properties
UR - https://www.scopus.com/pages/publications/84864597494
U2 - 10.1016/j.materresbull.2012.05.048
DO - 10.1016/j.materresbull.2012.05.048
M3 - 文章
AN - SCOPUS:84864597494
SN - 0025-5408
VL - 47
SP - 2357
EP - 2363
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 9
ER -