Indium(III) oxide

Indium(III) oxide

Chembox new
Name = Indium(III) oxide
ImageName = Indium(III) oxide
OtherNames = indium trioxide
Section1 = Chembox Identifiers
CASNo = 1312-43-2
Section2 = Chembox Properties
Formula = In2O3
MolarMass = 277.64 g/mol
Appearance = yellowish green odorless pieces
Density = 7.179 g/cm3, solid
Solubility = insoluble
MeltingPt = 1910°C
BoilingPt =
Section7 = Chembox Hazards
EUClass = not listed

Indium(III) oxide (In2O3) is a chemical compound, an amphoteric oxide of indium. It forms bixbyite-type cubic crystals.

Indium oxide is used in some types of batteries, thin film infrared reflectors transparent for visible light (hot mirrors), some optical coatings, and some antistatic coatings.

In combination with tin dioxide, indium oxide forms indium tin oxide (also called tin doped indium oxide or ITO), a material used for transparent conductive coatings.

In semiconductors, indium oxide can be used as an n-type semiconductor used as a resistive element in integrated circuits. [http://www.ceramic-materials.com/cermat/oxide/in2o3.html]

Thin films of indium oxide can be prepared by sputtering of indium target in argon/oxygen atmosphere. They can be used as diffusion barriers ("barrier metals") in semiconductors, eg. to inhibit diffusion between aluminium and silicon. [http://authors.library.caltech.edu/2310/]

Monocrystalline nanowires were synthetized from indium oxide by laser ablation, allowing precise diameter control down to 10 nm. Field effect transistors were fabricated from those. [http://www.annalsnyas.org/cgi/content/abstract/1006/1/104] Indium oxide nanowires can serve as sensitive and specific redox protein sensors. [http://www.foresight.org/Conferences/MNT11/Abstracts/Rouhanizadeh/index.html] Sol-gel method is another way to prepare the nanowires.

Indium oxide can serve as a semiconductor material, forming heterojunctions with p-InP, n-GaAs, n-Si, and other materials. A layer of indium oxide on a silicon substrate can be deposited from an indium trichloride solution, a method useful for manufacture of solar cells. [http://www.freepatentsonline.com/4436765.html]

In histology, indium oxide is used as a part of some stain formulations.

Thin films of chromium-doped indium oxide (In2-xCrxO3) was recently reported to be a magnetic semiconductor displaying high-temperature ferromagnetism, single-phase crystal structure, and semiconductor behavior with high concentration of charge carriers. It has possible applications in spintronics as a material for spin injectors. [http://www.hpcwire.com/hpc/670180.html] [http://www.hwscience.com/HWJS/archives/CIO/CIO.html]

References

External links

* [http://chsfpc5.chem.ncsu.edu/~franzen/sf/ito/sld002.htm Structure of indium oxide]


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