[Preparation and luminescence of CeOx/ZnO nanocomposite powders].
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.
Guo
Shu-xia
SX
Key Laboratory of Special Functional Materials, Henan University, Kaifeng 475001, China.
Zhang
Xing-tang
XT
Zhao
Hui-ling
HL
Li
Yun-cai
YC
Huang
Ya-bin
YB
Du
Zu-liang
ZL
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*
D011208:Powders; D002563:Cerium; C030583:ceric oxide; D015034:Zinc Oxide