title: Luminescence Properties of Sm3+/Eu3+ Co-Doped ZnO Quantum Dots.
abstract: In order to improve luminescence properties of semiconductor ZnO quantum dots (QDs), Sm3+/Eu3+ co-doped ZnO QDs have been controllably synthesized by sol-gel method in this paper. ZnO QDs have a spherical shape with mean diameter at about 5-6 nm, which was characterized by high-resolution transmission electron microscopy (HRTEM). ZnO QDs have hexagonal wurtzite structure with parts of Sm3+ and Eu3+ incorporated into the lattice, which was demonstrated by X-ray Diffraction (XRD). Luminescence properties at room temperature (RT) of different amount of Sm3+ and 2 mol% Eu3+ doped ZnO QDs were examined in-depth by optical spectra. In contrast to the Pr3+/Eu3+ co-doped fluorescent performance researched in our previous study, the photoluminescence (PL) spectra indicates the unique luminescence properties of Sm3+/Eu3+ co-doped ZnO QDs. In addition, fluorescence lifetimes were obtained to illustrate the luminous mechanism.
authors.forename: Fengyi
authors.initials: F
authors.lastname: Liu
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.forename: Yajing
authors.initials: Y
authors.lastname: Hu
authors.forename: Jin
authors.initials: J
authors.lastname: Na
authors.forename: Yun
authors.initials: Y
authors.lastname: Mou
authors.forename: Kun
authors.initials: K
authors.lastname: Yang
authors.forename: Zuhu
authors.initials: Z
authors.lastname: Ye
authors.forename: Mingyue
authors.initials: M
authors.lastname: Li
authors.forename: Ya-Hong
authors.initials: YH
authors.lastname: Xie