Q
titanium dioxide electrical resistivity
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Titanium dioxide (TiO2) is a semiconductor with its electrical resistivity highly dependent on the crystal structure, impurity levels, and temperature. In its pure form, TiO2 exists mainly in three polymorphs: rutile, anatase, and brookite. Rutile, the most stable form, exhibits lower resistivity in comparison to anatase and brookite due to its denser crystal structure, which facilitates easier electron movement. The resistivity of pure rutile TiO2 at room temperature is typically in the range of 10^3 to 10^5 ohm-cm, but this can drastically decrease with doping or increase under different environmental conditions, such as exposure to light or changes in temperature. The electrical properties of TiO2 make it suitable for various applications, including photocatalysis, dye-sensitized solar cells, and as dielectric materials in capacitors. Optimizing the resistivity of TiO2 involves careful control of the synthesis process and doping to tailor it for specific applications.
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