Ink-jet printing of doped polymers for organic light emitting devices

Abstract

Ink-jet printing was used to directly deposit patterned luminescent doped-polymer films. The luminescence of polyvinylcarbazol ͑PVK͒ films, with dyes of coumarin 6 ͑C6͒, coumarin 47 ͑C47͒, 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.

Thickness dependent absorption spectra in conjugated polymers: Morphology or interference?

“…4,5 A distinct advantage of CPs over other electronic materials is that they can be readily processed into thin films from solution using techniques such as spin-coating or inkjet printing, 6,7 therefore offering the prospect of low cost manufacturing processes.…”

Inkjet printed LED based pH chemical sensor for gas sensing

“…Inkjet printing has gradually become a versatile tool for accurately depositing very small quantities (tens of picoliters) of materials at defined positions on the surface of a wide variety of substrates. So far within scientific research, inkjet printing has been mostly applied to the manufacture of polymer light emitting diodes [29][30][31][32], deposition of conducting polymers [6,[33][34][35] and fluorescent nanoparticles [36] and fabrication of biosensors [37,38]. Inkjet printing offers advantages over other methods of deposition of thin films, such as patterning capability, reduction in waste products, high speed production, low cost fabrication, room temperature deposition, printing on large area and flexible substrates [6].…”

Microcontact printing of self-assembled monolayers to pattern the light-emission of polymeric light-emitting diodes

“…Since it is highly cost-effective to use techniques which are compatible with conventional high-throughput printing procedures, the use of flexible device substrates, and patterning techniques capable of handling such substrates, received much interest [7]. Among various patterning methods, including ink-jet printing [8][9][10], laser ablation [11,12] and various other techniques [13][14][15][16][17], soft lithography is one of the most widely studied techniques [18,19].…”