@inproceedings{23744,
  keywords = {Tio2, Optical constants, Band gap, Charge capacity, Electrochromic cerium titanium oxide, Grain size, Rms roughness},
  author = {Klaus von Rottkay and Thomas J Richardson and Michael D Rubin and Jonathan L Slack and Lisen Kullman},
  title = {Influence of stoichiometry on the electrochromic cerium-titanium oxide compounds},
  abstract = {<p>CeO<sub>2</sub>-TiO<sub>2</sub> finds use as passive counter-electrode in electrochromic devices. Thin films were produced by dc-sputtering in a wide range of compositions. Influence of total pressure and oxygen partial pressure on the optical constants of TiO<sub>2</sub> was investigated. Slightly substoichiometric TiO<sub>2</sub> films exhibit a red-shift of the bandgap. The TiO<sub>2</sub> content in the compound essentially determines the degree of cathodical coloring upon Li<sup>+</sup> intercalation. However, pure TiO<sub>2</sub> films with comparable visible transmittance in the clear state behave differently during electrochemical cycling depending on oxygen stoichiometry. Films that are deposited at higher total pressure are more oxygen rich and require initial formatting until current voltage cycles become stable. CeO<sub>2</sub>-TiO<sub>2</sub> films of intermediate compositions have the relatively highest charge capacity. Comparison with atomic force microscopy indicates a correlation of small grain size with high charge capacity.</p>},
  year = {1997},
  journal = {11th International Conference of Solid State Ionics},
  month = {11/1997},
  address = {Honolulu, Hawaii},
  language = {eng},
}