title: Synthesis and luminescence properties of YF3:Ce3+/Tb3+ nanocrystals.
abstract: YF3:Ce3+, YF3:Tb3+, and YF3:Ce3+/Tb3+ nanocrystals were synthesized by an ethylenediaminetetraacetic acid (EDTA)-assisted hydrothermal method and characterized by X-ray diffraction and scanning electron microscope. In the excitation spectra, there is one broad excitation band at 285 nm for YF3:Ce3+ and 255 nm for YF3:Tb3+, which are related to the f-d excitations of the Ce3+ and Tb3+ in the host, respectively. In the emission spectra of YF3:Ce3+/Tb3+ nanocrystals under different excitation wavelengths (285 and 255 nm), both spectra exhibit the emissions of Ce3+ and Tb3+, indicating that energy transfer could take place not only from Ce3+ to Tb3+ but also from Tb3+ to Ce3+ ions.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China.
authors.forename: Guofeng
authors.initials: G
authors.lastname: Wang
authors.forename: Weiping
authors.initials: W
authors.lastname: Qin
authors.forename: Daisheng
authors.initials: D
authors.lastname: Zhang
authors.forename: Guodong
authors.initials: G
authors.lastname: Wei
authors.forename: Kezhi
authors.initials: K
authors.lastname: Zheng
authors.forename: Lili
authors.initials: L
authors.lastname: Wang
authors.forename: Fuheng
authors.initials: F
authors.lastname: Ding