Transparent Conductive Coatings

Dontech manufactures a variety of transparent conductive coatings for EMI shielding, optical scanners, and transparent heater applications. Transparent conductive oxides such as indium tin oxide (ITO) and metals such as aluminum, gold or silver are deposited via DC or AC magnetron sputtering or ion enhanced e-beam evaporation on to optical substrates such as glass, acrylic, polycarbonate, ADC, or PET films.

Conductive coatings and substrate surfaces can be dielectrically enhanced (index matched) to maximize light transmission through the control of interface reflections. Reflection losses are converted to transmitted light. Dontech can index match the conductive coatings to air (n=1), to the optical substrate, and to an optical adhesive (n=1.43 through n>2.36). ITO coatings offer excellent optical properties and very good environmental durability with low to moderate levels of shielding. Standard conductivities for ITO coatings range from < 1 ohm/sq to >250 ohms/sq.

Dontech application engineers can recommend the transparent conductive coating best suited for your application. For additional information on transparent conductive coatings, please contact a Dontech applications engineer, or request that a hard copy of the Windows Design Guide be sent to you.