Abstract
The results of studies of the preparation, structure, and optical properties of undoped and Gd-doped CeO2 thin films are presented. Dense films with 4-150 nm grain size have been obtained on monocrystalline sapphire substrates using a polymeric precursor spin coating method. The results of the optical measurements are presented and correlated with the microstructure of the films. The transmission spectra have been used to determine the energy dependence of the refractive index, n and the extinction coefficient, k. Both n and k of the thin films decreased as grain size decreased and these results showed that this change could be related to the transition from crystalline to amorphous CeO2. The effect of dopant has little influence on n, < 5%, but doping resulted in about a 30%-40% reduction of k compared to undoped specimens, which could be related to the decrease of absorption centers due to the replacement of Ce by Gd. © 2002 American Institute of Physics.
Recommended Citation
T. Suzuki et al., "Optical Properties of Undoped and Gd-doped CeO2 Nanocrystalline Thin Films," Journal of Applied Physics, vol. 91, no. 3, pp. 2308 - 2314, American Institute of Physics, Feb 2002.
The definitive version is available at https://doi.org/10.1063/1.1430890
Department(s)
Materials Science and Engineering
Publication Status
Available Access
International Standard Serial Number (ISSN)
0021-8979
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2024 American Institute of Physics, All rights reserved.
Publication Date
01 Feb 2002
