Wet Coating Deposition of ITO Coatings on Plastic Substrates

In2O3:Sn (ITO) transparent conducting coatings of high optical quality have been obtained on glass and several plastic substrates by spin and dip coating processes followed by a low temperature processing (T 400 nm). The smallest stable resistivity so far obtained is ρ = 9 × 10−2Ωcm (sheet resistance of 1.6 kΩ□ for a 570 nm thick single layer). The transparency in the visible range is high, T ≈ 87%, the abrasion resistance is in agreement with DIN 58-196-G10 and the hardness according to ASTM D 3363-92a is 1H. A spray process allows to obtain antiglare-conducting coatings with an adjustable gloss of 60 to 80 GU and an optical resolution >8 lines/mm.