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[International Journal] Contact printing of the emitting layer for high performance multilayered phosphorescent organic light-emitting diodes
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T.H.Park , Y.W.Park , J.H.Choi , H.J.Choi , J.-W. Jeong , E.H.Song , Kyung Cheol Choi , B.K.Ju

Organic Electronics, June , 2011

Published

vol 12, no 6, pp 1063-1067

Abstract
Efficient multilayered organic light-emitting diodes (OLEDs) were fabricated using contact printing. In order to overcome the mixing problem occurring between the organic layers during the solution processes, contact printing was utilized on a small molecule layer. Since this contact printing allows multilayer stacking without the damage caused by organic solvents, high-performance OLEDs could be fabricated with solution-based small molecules employing a low cost process. In this study, the performance of the multilayered OLEDs manufactured by the contact printing process is significantly enhanced than that found in spin-coated devices.