Au and Ru colloids have been introduced into thin films of ZnO by spin coating metal ion-doped solutions of zinc acetylacetonate onto quartz or Pt Substrates, followed by heating at 400 degrees centigrade. Both types of film exhibit a blue tint due to Mie light absorption of the metal nanoparticles. Analysis of the visible absorption spectra suggests particle radii on the order of 2nm. However, electron micrograph reveal some larger particles and particle aggregates as well. While the Au colloid absorption band peaks at about 575 nm, Raman excitation profiles of the collodial films exhibit red-shifted maxima near 700 nm.
Revised: January 23, 2001 |
Published: December 1, 2000
Citation
Bozlee B.J., and G.J. Exarhos. 2000.Preparation and Characterization of Gold and Ruthenium Colloids in Thin Zinc Oxide Films.Thin Solid Films 377.PNNL-SA-33158.