標題: All-small-molecule efficient white organic light-emitting diodes by multi-layer blade coating
作者: Yeh, Han-Cheng
Meng, Hsin-Fei
Lin, Hao-Wu
Chao, Teng-Chih
Tseng, Mei-Rurng
Zan, Hsiao-Wen
物理研究所
光電工程學系
Institute of Physics
Department of Photonics
關鍵字: Phosphorescence;White light;Solution process;Small-molecule OLEDs
公開日期: 1-May-2012
摘要: Blue and white small-molecule organic light-emitting diodes are fabricated by multi-layer blade coating on hot plate at 80 degrees C with hot wind. Uniform multi-layer structures are made without dissolution due to rapid drying. Only small molecules originally developed for vacuum deposition are used. For hole transport layer of, 4',4 ''-tris(carbazol-9-yl)triphenylamine (TCTA), electron transport layer of 2,2',2 ''-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) (TBPI), emissive layer host of, 6-bis(3-(9H-carbazol-9-yl)phenyl)pyridine(26DCzPPy), triplet emitters of bis(3,5-difluoro-2-(2-pyridyl)phenyl-(2-carboxypyridyl)iridium(III) (FIrpic), and cathode of LiF/Al, the peak current efficiency for blue emission is 25.1 cd/A (10.8% and 9.3 lm/W). Orange emitter iridium(III) bis (4-(4-t-butylphenyl) thieno[3,2-c] pyridinato-N,C2')acetylacetonate (PO-01-TB) is added to obtain white emission with CIE coordinate of (0.39, 0.46) [1]. The current efficiency is 34.2 cd/A (11.6% and 12 lm/W) at maximum, 32.4 cd/A at 1000 cd/m(2), and 31 cd/A at 10,000 cd/m(2). (C) 2012 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.orgel.2012.02.001
http://hdl.handle.net/11536/15759
ISSN: 1566-1199
DOI: 10.1016/j.orgel.2012.02.001
期刊: ORGANIC ELECTRONICS
Volume: 13
Issue: 5
起始頁: 914
結束頁: 918
Appears in Collections:Articles


Files in This Item:

  1. 000302121900029.pdf