一维 Ca4Y6(SiO4)6O:Ln3+（Ln=Eu，Tb）荧光粉的静电纺丝法制备及其发光性能。
The fabrication of one-dimensional Ca4Y6(SiO4)6O: Ln3+ (Ln=Eu, Tb) phosphors by electrospinning method and their luminescence properties.
机构信息
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
出版信息
J Colloid Interface Sci. 2011 Mar 1;355(1):89-95. doi: 10.1016/j.jcis.2010.11.082. Epub 2010 Dec 4.
One-dimensional Ca(4)Y(6)(SiO(4))(6)O: Ln(3+) (Ln=Eu, Tb) microfibers were fabricated by a simple and cost-effective electrospinning method. X-ray diffraction (XRD) pattern and high-resolution transmission electron microscopy (HRTEM) confirmed that the fibers were composed of hexagonal Ca(4)Y(6)(SiO4)(6)O phase. Thermogravimetric and differential scanning calorimetry (TG-DSC) results showed that the Ca(4)Y(6)(SiO4)(6)O phase began to crystallize at 740°C. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results indicated that the diameter of as-prepared microfibers ranged from 390 to 900 nm and the diameter of the microfibers annealed at 1000°C ranged from to 120 to 260 nm. Under ultraviolet and low-voltage electron beams (3-5 kV) excitation, the Ca(4)Y(6)(SiO(4))(6)O: Ln(3+) (Ln=Eu, Tb) samples showed the red and green emission, corresponding to (5)D(0)→(7)F(2) transition of Eu(3+) and (5)D(4)→(7)F(5) transition of Tb(3+), respectively.
一维 Ca(4)Y(6)(SiO(4))(6)O:Ln(3+)（Ln=Eu、Tb）微纤维通过简单且经济高效的静电纺丝法制备。X 射线衍射（XRD）图谱和高分辨率透射电子显微镜（HRTEM）证实纤维由六方相 Ca(4)Y(6)(SiO4)(6)O 组成。热重-差示扫描量热法（TG-DSC）结果表明 Ca(4)Y(6)(SiO4)(6)O 相于 740°C 开始结晶。扫描电子显微镜（SEM）和透射电子显微镜（TEM）结果表明，所制备的微纤维的直径范围为 390-900nm，在 1000°C 下退火的微纤维的直径范围为 120-260nm。在紫外光和低电子束（3-5kV）激发下，Ca(4)Y(6)(SiO(4))(6)O:Ln(3+)（Ln=Eu、Tb）样品分别显示出 Eu(3+)的(5)D(0)→(7)F(2)跃迁和 Tb(3+)的(5)D(4)→(7)F(5)跃迁对应的红色和绿色发射。
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