Chemical Vapor Synthesis and Structural Characterization of Nanocrystalline Zn1-xCoxO (x=0-0.50) Particles by X-ray Diffraction and X-ray Absorption Spectroscopy


Djenadic R., Akgul G., Attenkofer K., Winterer M.

JOURNAL OF PHYSICAL CHEMISTRY C, cilt.114, ss.9207-9215, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 114 Konu: 20
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1021/jp908148y
  • Dergi Adı: JOURNAL OF PHYSICAL CHEMISTRY C
  • Sayfa Sayısı: ss.9207-9215

Özet

Nanocrystalline Zn1-xCoxO (x = 0-0.50) particles are produced by chemical vapor synthesis using laser flash evaporation as a novel precursor delivery method. The crystal and local structure of the samples is studied using X-ray diffraction and X-ray absorption spectroscopy. A single wurtzite phase is observed in samples with cobalt contents as high as = 0.25 (actual content is 0.33 determined by atomic absorption spectroscopy). X-ray absorption spectra show that the Co2+ ions are incorporated into the ZnO wurtzite lattice substituting Zn2+ ions for cobalt contents between x = 0.001 and x = 0.20. Only small lattice deformations are observed in these solid solutions.