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Indium tin oxide (ITO) |
(In2O3)(SnO2) |
ITO, tin-doped indium oxide
Indium tin oxide (ITO), commonly known as tin-doped indium oxide, is a solid solution of indium(III) oxide (90% In2O3) and tin(IV) oxide (10% SnO2). It has a yellowish-gray appearance in thick layers and is virtually transparent in very thin layers. It is most commonly used as a transparent, conductive coating for a variety of electronic devices. It can be used in electroluminescent devices, and incorporated into infrared and UV light reflecting coatings. ITO has a high electrical conductivity while simultaneously exhibiting unique optical properties: transparent to most visible light waves and opaque to infrared and UV light. MemPro’s ITO nanofibers – in the family nCeramic materials - are available with narrow fiber diameter distributions (ave. 100 – 120 nm).
Applications
- liquid crystal, flat panel, and plasma displays
- electroluminescent materials
- dielectric mirrors (infrared)
- advanced solar cells
- transparent conducting oxide coatings
- anti-reflection coatings
- sensor coatings
- strain gauges
- n-type semiconductors
Characteristics
|
Appearance |
yellow/green-yellow, flake, fibrous |
|
Structure |
solid, faceted |
Density |
6.8 – 7.1 gcm-3 |
Melting Point |
1,800 - 2,200°C |
Thermal Conductivity |
N/A |
Electrical Conductivity |
~105 - 106 Sm-1 (depends on coating method and thickness) |
Dielectric Strength |
N/A |
Hardness |
N/A |
Fiber diameter |
100 - 120 nm (ave.) |
Fiber length |
>5 µm |
|
Refractive Index |
1.76447 (λ=0.85 μm) |
Catalyst Support |
not typical |
Other |
infrared and UV light reflector, transparent to most visible light |
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