|
张晓宏教授、陈先凯教授、王凯副教授及其合作者在Nat. Commun.上发表论文
|
发布时间:2024-04-23 点击:10
|
题目: | Efficient, narrow-band, and stable electroluminescence from organoboron-nitrogen-carbonyl emitter | 作者: | Ying-Chun Cheng1#, Xun Tang2#, Kai Wang1,3*, Xin Xiong1, Xiao-Chun Fan1, Shulin Luo1, Rajat Walia1, Yue Xie1, Tao Zhang1, Dandan Zhang1, Jia Yu1,4, Xian-Kai Chen1*, Chihaya Adachi2,5*, and Xiao-Hong Zhang1,4* | 单位: | 1Institute of Functional Nano & Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu, 215123, P.R. China. 2Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan. 3Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, Jiangsu, PR China 4Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, Jiangsu, PR China 5International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, 744 Motooka, Nishi, Fukuoka, 819-0395, Japan. | 摘要: | Organic light-emitting diodes (OLEDs) exploiting simple binary emissive layers (EMLs) blending only emitters and hosts have natural advantages in low-cost commercialization. However, previously reported OLEDs based on binary EMLs hardly simultaneously achieved desired comprehensive performances, e.g., high efficiency, low efficiency roll-off, narrow emission bands, and high operation stability. Here, we report a molecular-design strategy. Such a strategy leads to a fast reverse intersystem crossing rate in our designed emitter h-BNCO-1 of 1.79×105s−1. An OLED exploiting a binary EML with h-BNCO-1 achieves ultrapure emission, a maximum external quantum efficiency of over 40% and a mild roll-off of 14% at 1000cd·m−2. Moreover, h-BNCO-1 also exhibits promising operational stability in an alternative OLED exploiting a compact binary EML (the lifetime reaching 95% of the initial luminance at 1000cdm−2 is ~ 137h). Here, our work has thus provided a molecular-design strategy for OLEDs with promising comprehensive performance. | 影响因子: | 17.694 | 分区情况: | 一区 | 链接: | https://www.nature.com/articles/s41467-024-44981-1 |
责任编辑:郭佳
|
|