POLYTHIOPHENE-CONTAINING INK COMPOSITIONS FOR INKJET PRINTING

摘要

Ink compositions comprising polythiophenes and methicone that are formulated for Inkjet printing the hole injecting layer (HIL) of an organic light emitting diode (OLED) are provided. Also provided are methods of inkjet printing the HILs using the ink compositions. Ink compositions for inkjet printing layers in organic light emitting diodes (OLEDs) have been proposed. However, problems associated with inadequate wetting properties of the ink compositions has stifled the development of printable inks because improper wetting leads to non-uniform film formation and, therefore, non-uniform luminescence from organic light emitting diode pixels that incorporate the printed films.