Dong Guoping, Chi Yingzhi, Xiao Xiudi, Liu Xiaofeng, Qian Bin, Ma Zhijun, Wu E, Zeng Heping, Chen Danping, Qiu Jianrong
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Qinghe Road 390, Jiading District, Shanghai 201800, PR China.
Opt Express. 2009 Dec 7;17(25):22514-9. doi: 10.1364/OE.17.022514.
Y(2)O(3): Eu(3+) nanofibers with the average diameter of ~300 nm were in situ fabricated by electrospinning. X-ray diffraction (XRD) pattern confirmed that the Y(2)O(3): Eu(3+) nanofibers were composed of pure body-centered cubic (bcc) Y(2)O(3) phase. High-resolution transmission electron microscopy (HRTEM) results indicated that Y(2)O(3): Eu(3+) nanofibers were constituted of nonspherical crystalline grains, and these crystalline grains were orderly arranged along the axial direction of single nanofiber. These Y(2)O(3): Eu(3+) nanofibers showed a partially polarized photoluminescence (PL). The arrangement of crystalline grains and the mismatch of dielectric constant between Y(2)O(3): Eu(3+) nanofiber and its environment probably contributed together to the polarized PL from Y(2)O(3): Eu(3+) nanofiber.
通过静电纺丝原位制备了平均直径约为300 nm的Y(2)O(3): Eu(3+)纳米纤维。X射线衍射(XRD)图谱证实Y(2)O(3): Eu(3+)纳米纤维由纯体心立方(bcc) Y(2)O(3)相组成。高分辨率透射电子显微镜(HRTEM)结果表明，Y(2)O(3): Eu(3+)纳米纤维由非球形晶粒构成，且这些晶粒沿单根纳米纤维的轴向有序排列。这些Y(2)O(3): Eu(3+)纳米纤维呈现出部分偏振光致发光(PL)。晶粒的排列以及Y(2)O(3): Eu(3+)纳米纤维与其环境之间介电常数的不匹配可能共同导致了Y(2)O(3): Eu(3+)纳米纤维的偏振PL。
