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 to that of films of the same composition deposited by
spin-coating. Light emitting diodes with low turn-on voltages were also
fabricated in PVK doped with C6 deposited by ink-jet printing.