Journal
ORGANIC ELECTRONICS
Volume 22, Issue -, Pages 40-43Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2015.03.034
Keywords
Organic light emitting diode; Aerosol Jet; Solution processing; Non-halogenated solvents; Atmospheric processing; Direct-write patterning
Funding
- Flemish Government: Department of Economy, Science, and Innovation
- Natural Sciences Engineering and Research Council of Canada
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We demonstrate the patterning of top emitting organic light emitting diodes (OLEDs) by direct-write Aerosol Jet printing in air from non-halogenated solvents. Indane was determined to be a suitable single solvent to dissolve the archetypal host poly(N-vinylcarbazole) and guest emitting dopants complexes for red, green, and blue OLEDs, and to print on both PEDOT:PSS and MoO3 transport layers. The Aerosol Jet deposition parameters were studied, including: atomization flow rate, exhaust flow rate, focusing sheath flow rate, nozzle-to-substrate distance, nozzle speed, and substrate temperature. A line width of 30 mu m and thickness of 30 nm was achieved, resulting in RGB OLEDs fabricated side-by-side with a pixel density of 140 ppi. (C) 2015 Elsevier B.V. All rights reserved.
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