期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 22, 期 46, 页码 16576-16585出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201603994
关键词
electrochemistry; electron transport; luminescence; organic light-emitting diodes; thin films
资金
- National Program for Key Basic Research Project (973 Program) [2015CB351901]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09020201]
- National Natural Science Foundation of China (NSFC) [21402233]
- Natural Science Foundation of Jiangsu Province [BK2012631, BK20140387]
- Project on the Integration of Industry, Education and Research of Jiangsu Province [BY2014066]
- Research Fund for the Nano-tech Program of Suzhou City [ZXG201418]
- Youth Innovation Promotion Association CAS [2013206]
A novel cross-linkable electron-transport material has been designed and synthesized for use in the fabrication of solution-processed OLEDs. The material exhibits a low LUMO level of -3.51eV, a high electron mobility of 1.5x10(-5)cm(2)V(-1)s(-1), and excellent stability. An average 9.3% shrinkage in film thickness was observed for the film after thermal curing. A maximum external quantum efficiency (EQE) of 15.6% (35.0cdA(-1)) was achieved for blue-phosphorescent OLEDs by spin-coating and 13.8% (31.0cdA(-1)) for an ink-jet-printed device, both of which are better than the EQE of a control device prepared by vacuum-deposition (see figure).
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