Open AccessOptical properties of Ti/TiO2 caped Tb3+-doped ZnO nanofibers
Author(s) -
Yanzhe Mao,
Yanxia Liu,
Jian Li,
Hui Li,
Xiaojun Pan,
Erqing Xie
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.186801
Subject(s) - materials science , photoluminescence , crystallinity , raman spectroscopy , doping , nanofiber , ultraviolet , electrospinning , diffraction , hexagonal phase , optoelectronics , analytical chemistry (journal) , nanotechnology , optics , composite material , polymer , chemistry , physics , chromatography
ZnO:Tb nanofibers are fabricated by electrospinning method. X-ray diffraction and Raman results show that the sample is of hexagonal phase. The positions of doped diffraction peaks shift toward the small angle and the shift does not change with Tb content. Photoluminescence (PL) spectra of Tb-doped ZnO nanofibers show a strong defect-related emission and indicate that the doping affects the crystallinity of ZnO. It is found that Ti-capped can enhance the ultraviolet emission of ZnO nanofiber, while the defect-related emission is depressed. The enhancement in ultraviolet emission is mostly attributed to the surface plasmon coupling effect at the interface. The PL results indicate that the ZnO is not a proper matrix for Tb3+ ion.