@article{oai:nagasaki-u.repo.nii.ac.jp:00016348,
 author = {Kamada, Kai and Enomoto, Naoya and Hojo, Junichi},
 issue = {27},
 journal = {Electrochimica Acta},
 month = {Nov},
 note = {In the present study, the appropriate electrolysis conditions were determined for attaining doped ceria thin films with a high density and adhesion in an aqueous solution containing of Ce3+ and Sm3+ ions. Based on a comparison of the anodic and cathodic polarizations, while the former only induced the deposition of Ce3+, the latter accomplished the simultaneous deposition of Ce and Sm species. Under an applied cathodic bias below the hydrogen evolution potential, the Ce3+ and Sm3+ were reacted with OH- ions generated by the reduction of water molecules, and then were deposited on the electrode as a hydroxide. The hydroxide was subsequently oxidized and dehydrated to form the ceria-based thin layer. The morphologies of the as-deposited films were significantly altered on the basis of the applied potential. Moreover, the addition of acetic acid to the electrolysis bath caused the production of a transparent, dense, and adherent film. The XRD pattern and Raman spectrum of the thin film revealed that the film was crystallized as the fluorite structure without any heat treatment, and Sm3+ is substituted at the Ce4+ site. Moreover, the Sm content in the film could be easily controlled by the metal concentration in the solution., Electrochimica Acta, 54(27), pp.6996-7000; 2009},
 pages = {6996--7000},
 title = {Optimization of electrochemical synthesis conditions for dense and doped ceria thin films},
 volume = {54},
 year = {2009}
}