Highly Air-Stable Electron-Transport Material for Ink-Jet-Printed OLEDs
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- 作者：M. Sc. Changting Wei ; Prof. Jinyong Zhuang ; Prof. Yali Chen ; Prof. Dongyu Zhang ; Prof. Wenming Su and Prof. Zheng Cui
- 刊名：Chemistry - A European Journal
- 出版年：2016
- 出版时间：November 7, 2016
- 年：2016
- 卷：22
- 期：46
- 页码：16576-16585
- 全文大小：4804K
- ISSN：1521-3765
文摘
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 −3.51 eV, a high electron mobility of 1.5×10−5 cm2 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 % (35.0 cd A−1) was achieved for blue-phosphorescent OLEDs by spin-coating and 13.8 % (31.0 cd A−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).