Carrier doping in anatase TiO2 film by perovskite overlayer deposition

Heterostructures composed of perovskite overlayers on anatase TiO(2) films were fabricated on LaAlO(3) substrates. By depositing LaTiO(3) and LaAlO(3) thin films on the insulating anatase TiO(2) films, metallic conduction was induced in the anatase layer with the increasing thickness of the perovskite overlayer. This perovskite overlayer deposition on TiO(2) provides a method to induce free carriers, which may be applied to the development of transparent conducting oxides. (C) 2008 American Institute of Physics.