title: [Preparation and luminescence of CeOx/ZnO nanocomposite powders].
abstract: CeOx/ZnO nanocomposite powders were prepared by sol-gel process. The powder samples were examined by XRD, TEM, XPS and photoluminescence (PL). PL enhancement of nanocomposite powder at 502 nm compared to pure ZnO was observed when Ce3+ were present in samples. New peak at 603 nm was observed when Ce4+ were present. PL enhancement of nanocomposite powder was correlated with more oxygen vacancies which were caused by Ce3+. The new peak at 603 nm is attributed to new energy transition in the interface of CeO2/ZnO.
authors.affiliation: Key Laboratory of Special Functional Materials, Henan University, Kaifeng 475001, China.
authors.forename: Shu-xia
authors.initials: SX
authors.lastname: Guo
authors.forename: Xing-tang
authors.initials: XT
authors.lastname: Zhang
authors.forename: Hui-ling
authors.initials: HL
authors.lastname: Zhao
authors.forename: Yun-cai
authors.initials: YC
authors.lastname: Li
authors.forename: Ya-bin
authors.initials: YB
authors.lastname: Huang
authors.forename: Zu-liang
authors.initials: ZL
authors.lastname: Du
mesh_terms: D002563:Cerium / Q000737:chemistry*; D049449:Luminescence; D008163:Luminescent Measurements / Q000379:methods; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D056951:Photoelectron Spectroscopy; D011208:Powders; D013050:Spectrometry, Fluorescence; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D011208:Powders; D002563:Cerium; C030583:ceric oxide; D015034:Zinc Oxide