標題: Uniform dispersion of triplet emitters in multi-layer solution-processed organic light-emitting diodes
作者: Huang, Sheng-Yang
Meng, Hsin-Fei
Huang, Heh-Lung
Chao, Teng-Chih
Tseng, Mei-Rurng
Chao, Yu-Chiang
Horng, Sheng-Fu
物理研究所
Institute of Physics
關鍵字: Triplet emitters;Polymer light-emitting diodes
公開日期: 1-Dec-2010
摘要: The influence of the iridium complex solubility on the efficiency of multi-layer solution-processed organic light-emitting diode is demonstrated by synthesized orange triplet iridium complexes with the same core. The solubility of the iridium(III) bis(4-phenylthieno13,2-clpyridinato-N,C(2)') acetylacetonate is increased and uniform dispersion of iridium complex in polymer host poly(vinylcarbazole) is achieved by tert-butyl and n-hexyl group modification. Blade coating technique is utilized to achieve tri-layer structures with a polymer hole-transporting layer poly[(9,9-dioctylfluoreny1-2,7-diyl)-co-(4,4'-(N-(4-s-butylphenyl))diphenylamine)] a host-guest emissive layer, and small-molecule hole-blocking layer 1,3,5-tris(N-phenylbenzimidazol-2-yl) benzene. The efficiency as high as 20 cd/A is achieved for orange-emitting device. (C) 2010 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.synthmet.2010.09.015
http://hdl.handle.net/11536/26264
ISSN: 0379-6779
DOI: 10.1016/j.synthmet.2010.09.015
期刊: SYNTHETIC METALS
Volume: 160
Issue: 23-24
起始頁: 2393
結束頁: 2396
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