| Literature DB >> 24523013 |
Seung Ji Cha1, Se-Na Cho, Woo-Hyung Lee, Ha-Seul Chung, In-Nam Kang, Min Chul Suh.
Abstract
Two thermally cross-linkable hole transport polymers that contain phenoxazine and triphenylamine moieties, X-P1 and X-P2, are developed for use in solution-processed multi-stack organic light-emitting diodes (OLEDs). Both X-P1 and X-P2 exhibit satisfactory cross-linking and optoelectronic properties. The highest occupied molecular orbital (HOMO) levels of X-P1 and X-P2 are -5.24 and -5.16 eV, respectively. Solution-processed super yellow polymer devices (ITO/X-P1 or X-P2/PDY-132/LiF/Al) with X-P1 or X-P2 hole transport layers of various thicknesses are fabricated with the aim of optimizing the device characteristics. The fabricated multi-stack yellow devices containing the newly synthesized hole transport polymers exhibit satisfactory currents and power efficiencies. The optimized X-P2 device exhibits a device efficiency that is dramatically improved by more than 66% over that of a reference device without an HTL.Entities:
Keywords: conjugated polymers; curing of polymers; heteroatom-containing polymers; light-emitting diodes; spin coating
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Year: 2014 PMID： 24523013 DOI： 10.1002/marc.201400002
Source DB: PubMed Journal: Macromol Rapid Commun ISSN： 1022-1336 Impact factor: 5.734