標題: | Great improvement of operation-lifetime for all-solution OLEDs with mixed hosts by blade coating |
作者: | Chang, Yu-Fan Yu, Cheng-Han Yang, Shao-Chun Hong, I-Hong Jiang, Sin-Ciang Meng, Hsin-Fei Huang, Heh-Lung Zan, Hsiao-Wen Horng, Sheng-Fu 物理研究所 光電工程學系 Institute of Physics Department of Photonics |
關鍵字: | Organic Light-Emitting Diodes;Solution-process;Operation-lifetime;Blade-coating |
公開日期: | 三月-2017 |
摘要: | We investigated some effective device designs and fabrication methods for long operation-lifetime all solution-processed Phosphorescent OLEDs (PhOLEDs) and fluorescent OLEDs with mixed-hosts system and thin Poly [(9, 9-dioctylfluorenyl-2, 7-diyl)-co-(4, 4\'-(N-(4-sec-butylphenyl) diphenylamine)] (TFB). The all-solution-processed green PhOLEDs had high current efficiency (30.3 cd/A) and long operation lifetime. The best half-lifetime of green PhOLEDs with thin HTL, MH-hosts EML and optimized deposition was 310 h at an initial luminance 1000 cd/m(2), 250 h at an initial luminance 500 cd/m(2) for green PhOLEDs with thin HTL, and MH-hosts EML, and the lifetime of triple layer PhOLEDs device was only 0.5 h for the same materials. The red PhOLEDs exhibited a high current efficiency (10.93 cd/A) and half lifetime with 157.9 h at an initial luminance 500 cd/m(2). For the blue fluorescent OLEDs, the thin polymer TFB, mixed-hosts EMI, double EMLs and optimization deposition yield a high current efficiency (5.68 cd/ A) and long operation-lifetime with 117.7 h at an initial luminance 500 cd/m(2). Single host fluorescent device had half-lifetime of 73.5 h only at an initial luminance 100 cd/m(2). Finally, by doping red emitter Rubrene into stable blue device, we achieved soft yellow OLEDs with high efficiency (10.87 cd/A) and 8 fold improvement operation-lifetime (1200 h). We believe that such all-solution-processed OLEDs which showed greatly improved operational lifetimes would be suitable for the indoor supportive lighting with natural colors. (C) 2016 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.orge1.2016.12.003 http://hdl.handle.net/11536/133155 |
ISSN: | 1566-1199 |
DOI: | 10.1016/j.orge1.2016.12.003 |
期刊: | ORGANIC ELECTRONICS |
Volume: | 42 |
起始頁: | 75 |
結束頁: | 86 |
顯示於類別: | 期刊論文 |