A method of fabricating semiconductor devices using ink-jet printing is provided to directly deposit patterned polymer films to create OLED's and other semiconductor devices. The luminescence of poly-vinylcarbazol (PVK) films, with dyes of coumarin 6 (C6), coumarin 47 (C47), and nile red was similar...http://www.google.se/patents/US6087196?utm_source=gb-gplus-sharePatent US6087196 - Fabrication of organic semiconductor devices using ink jet printing