Abstract
This study was supported by the Government of the State of Santa Catarina through the FUMDES and FAPESC programs.
Highlights
Titanium oxides are semiconductor materials that have two main stoichiometries: TiO2 and Ti2O3
Many papers have been published on this topic due to the interest in the application of this material in different devices, including flat panel displays (FPD), light-emitting devices (LED), solar cells and photo-induced activity . 5,6,7 Given that, TiO2:Nb has been investigated as an alternative material to substitute ITO films due to the toxic nature of the indium
Ti2O3:Nb films show optical transmittance between 30% and 50% for incident radiation between 400 nm and 700 nm, that is, in the visible optical range, this value is close to that achieved for ITO 47
Summary
Titanium oxides are semiconductor materials that have two main stoichiometries: TiO2 and Ti2O3. Much research is focused on improving the harvesting of solar light and its conversion into other forms of energy or chemical reactivity. The strategy for this purpose can be done by doping TiO2 in order to reduce the band-gap energy and to achieve absorption in the visible light region. In 2005, Furubayashi et al 4 reported that Nb-doping into TiO2 (anatase) produced transparent conducting oxide (TCO) films. The resistivity of such films was as low as 10-4 Ω.cm at room temperature.
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