Surface electronic properties of ZnO nanoparticles
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Date
2008-06-30
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics
Abstract
The surface electronic structure of ZnO nanoparticles has been studied with photoemission and x-ray absorption spectroscopies. Contrary to expectation, ZnO:Zn phosphor nanoparticles were found to contain a lower oxygen vacancy density on the surface than undoped ZnO counterparts, but oxygen vacancies are in different chemical environments. Cathodoluminescence shows intense green luminescence from the ZnO:Zn surface, while the undoped nanoparticles exhibit only the near-band-edge emission. The results indicate the roles of surface oxygen vacancies and their environment in the previously unexplained green luminescence from the ZnO:Zn material. © 2008, American Institute of Physics
Description
Keywords
Photoelectron spectroscopy, Absorption, Oxygen, Emission, Photoemission, Zinc oxides
Citation
Ton-That, C., Phillips, M. R., Foley, M., Moody, S. J., & Stampfl, A. P. J. (2008). Surface electronic properties of ZnO nanoparticles. Applied Physics Letters, 92(26), 3. doi:10.1063/1.2952955