標題: Organic light-emitting devices based on solution-processible quinolato-complex supramolecules
作者: Cheng, Jung-An
Chen, Chin H.
Shieh, Han-Ping D.
光電工程學系
顯示科技研究所
友訊交大聯合研發中心
Department of Photonics
Institute of Display
D Link NCTU Joint Res Ctr
關鍵字: OLEDs;Solution processable;Alq(3);EL
公開日期: 15-Feb-2009
摘要: This paper discusses a new type of supramolecular material tris{5-N-[3-(9H-carbazol-9-yl)propyl]-N-(4-methylphenyl)aminesulfonyl-8-hydroxyquinolato} aluminum(III), Al(SCarq)(3), which we synthesized using three 5-N-[3-(9H-carbazol-9-yl)propyl]-N-(4-methylphenyl)aminesulfonyl-8-hydroxyquinoline as bidentate ligands. The peak photoluminescence in the solid phase appears at 488 nm. In cyclic voltammetric measurement, two oxidation peaks, which were obtained at -5.6 and -5.9eV, correspond to HOMO sites of carbazoyl and aluminum quinolates, respectively. in the investigation of solid morphological thin film, the flat surface was investigated using an atomic force microscope. The root mean square (rms) and mean roughness (R(a)) were respectively measured to be 0.427 and 0.343 nm. For the fabrication of organic light-emitting devices (OLEDs) using spin-coating techniques, the turn-on voltage and maximum luminescence of the optimized electroluminescence device, glass/ITO (20 nm)/PEDOT: PSS (75 nm)/Al(SCarq)(3) (85 nm)/BCP (8 nm)/LiF (1 nm)/Al (200 nm), were respectively 9.6 V and 35.0 cd m(-2). Due to the electroplex formation between the carbazole (electron-donor) and the aluminum quinolates (electron-acceptor) moieties under an applied DC bias, the chromaticity of electroluminescence shifted to green-yellow with 1931 CIE(x,y) (0.40, 0.47). (C) 2008 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.matchemphys.2008.08.084
http://hdl.handle.net/11536/7629
ISSN: 0254-0584
DOI: 10.1016/j.matchemphys.2008.08.084
期刊: MATERIALS CHEMISTRY AND PHYSICS
Volume: 113
Issue: 2-3
起始頁: 1003
結束頁: 1008
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