title: Controlled synthesis of NaYF4 nanoparticles and upconversion properties of NaYF4:Yb, Er (Tm)/FC transparent nanocomposite thin films.
abstract: Monodisperse oleic acid stabilized pure NaYF(4) nanoparticles with controlled size and shape have been successfully synthesized by changing the initial reaction temperature. Transparent nanocomposite thin films consisting of NaYF(4):Yb, Er (Tm) upconverting nanoparticles (UCNPs) and fluorocarbon resin (FC) are deposited on the slide glass by dip-coating method. The results show that these nanocomposite thin films exhibit intense green and blue upconversion photoluminescence under 980 nm laser excitation and higher transparency than blank substrate. The NaYF(4):Yb,Er (Tm) nanoparticles and NaYF(4):Yb,Er (Tm)/FC nanocomposite thin films have been characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), scanning electron microscopy (SEM), SEM/back-scattered electron (BSE), atomic force microscopy (AFM), UV-Vis spectrophotometer (UVPC), and photoluminescence (PL) spectra. These nanocomposite thin films can be potentially used in solar cells field.
authors.affiliation: State Key Laboratory of Materials-Orient Chemical Engineering, College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, PR China.
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Huang
authors.forename: Chunhua
authors.initials: C
authors.lastname: Lu
authors.forename: Chenfei
authors.initials: C
authors.lastname: Jiang
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Jianbin
authors.initials: J
authors.lastname: Song
authors.forename: Yaru
authors.initials: Y
authors.lastname: Ni
authors.forename: Zhongzi
authors.initials: Z
authors.lastname: Xu
mesh_terms: D004871:Erbium / Q000737:chemistry*; D005459:Fluorides / Q000138:chemical synthesis / Q000737:chemistry*; D005465:Fluorocarbon Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D049449:Luminescence; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D053758:Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D013696:Temperature; D015018:Ytterbium / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: D005465:Fluorocarbon Polymers; C525362:sodium yttriumtetrafluoride; D015019:Yttrium; D004871:Erbium; D015018:Ytterbium; D005459:Fluorides