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| Physical Properties |
| State of matter | Solid |
| Melting point | 1800-2200 K (2800-3500 °F) |
| Density | 7120-7160 kg/m 3 at 293 K |
| Color (in powder form) | Pale yellow to greenish yellow, depending on SnO 2 concentration |
| Values vary with composition. |
| SI units & STP are used except where noted. |
Indium tin oxide (
ITO, or
tin-doped indium oxide) is a mixture of indium(III) oxide (In 2 O 3 ) and tin(IV) oxide (SnO 2 ), typically 90% In 2 O 3 , 10% SnO 2 by weight. It is transparent and colorless in thin layers. In bulk form, it is yellowish to grey.
Indium tin oxide's main feature is the combination of electrical conductivity and optical transparency. However, a compromise has to be reached during film deposition, as high concentration of charge carriers will increase the material's conductivity, but decrease its transparency.
Thin films of indium tin oxide are most commonly deposited on surfaces by electron beam evaporation, physical vapor deposition, or a range of sputter deposition techniques.