High-quality polished 1 mm thick borosilicate glass substrates,
coated with 150 nm ITO of about 20O/sq surface resistance, have
been used for OLED fabrication. The ITO has been partially removed
by a lithographic process using UV curable resins and a mask aligner
in a class-10 clean room. Before coating the samples with PEDOTPSS, an ultrasonic cleaning with organic solvents (acetone, isopropanol and ethyl alcohol) and de-mineralized water has been
performed on each substrate