ITO

ITO = Indium Tin Oxide

At optical frequencies this behaves as a hard dielectric with refractive index n~2 k~0.01.

At lower than optical freqeuncies it behaves as a conductor.

Thus is can be use to provide an optically transparent wire.

It is useful as a dielectric that can be deposited in the sputterer (since it is also a conductor it doesn't produce space-charge problems and deposits quite well).

We have an ITO sputterer target.

n=2.30, k=0.02 @ 400nm n=1.86, k=0.01 @ 780nm

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