Kim, Mu-Hyun Suh, Min Chul Kwon, Jang Hyuk Chin, Byung Doo 2024-01-21T01:32:13Z 2024-01-21T01:32:13Z 2021-09-05 2007-02-26 0040-6090 https://pubs.kist.re.kr/handle/201004/134634 We have fabricated highly efficient, molecularly doped green electrophosphorescent devices in which the emitter layer was comprised of a small molecule and polymeric co-host system. The polymeric hosts were evaluated not only in terms of achieving efficient device performance without triplet quenching, but also in terms of film formation ability and donor-to-acceptor transfer quality by laser thermal patterning. 4,4'-N,N'-dicarbazole-biphenyl (CBP) or 2-4(biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiaxole (PBD) was used as small molecule, in combination with the selected co-host polymeric host, poly(9-vinyl carbazole) (PVK). Stripe patterns with edge roughnesses less than 3 mu m and device performance equal to that of spin-coated devices were achieved. The soluble, patterned electrophosphorescent device developed in the present work can be used as the basis for the future development of high efficiency, large area organic light emitting devices. (c) 2006 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA LIGHT-EMITTING DEVICES POLYMERS DIODES POLY(N-VINYLCARBAZOLE) LEDS Molecularly doped electrophosphorescent solution processed and laser patterned emitters for devices Article 10.1016/j.tsf.2006.10.067 1 THIN SOLID FILMS, v.515, no.7-8, pp.4011 - 4015 THIN SOLID FILMS 515 7-8 4011 4015 scie scopus 000244825100117 2-s2.0-33846920884 Materials Science, Multidisciplinary Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Materials Science Physics Article LIGHT-EMITTING DEVICES POLYMERS DIODES POLY(N-VINYLCARBAZOLE) LEDS electrophosphorescent device energy transfer laser patterning