Reactive magnetron sputtering of indium tin oxide films on acrylics - electrical resistivity and optical properties

The effects of processing parameters on the deposition rate lattice parameters, stoichiometric compositions, surface morphology, and bonding state of indium tin oxide (ITO) films on acrylics had been previously reported. This study was a continuation of the previous investigation and focused on the electrical resistivity and optical properties of ITO films. The electrical resistivity decreased and then increased with oxygen flow rate. This was due to the effects of oxygen vacancies and impurity scattering. The resistivity of ITO films decreased with the applied bias voltage and film thickness. The transmittance of visible light increased with the oxygen flow rate and decreased with film thickness. Films deposited at oxygen flow rates having low electrical resistivity also had higher infrared radiation (IR) reflectance.