Triplet decay-induced negative temperature dependence of the transient photoluminescence decay of thermally activated delayed fluorescence emitter
文献类型：期刊论文
| 作者 | Wei, Xiaofang1,3; Chen, Yongzhen1,3; Duan, Ruihong2,3; Liu, Jianjun1,3; Wang, Ruifang1,3; Liu, Yanwei1,3; Li, Zhiyi1,3; Yi, Yuanping2; Yamada-Takamura, Yukiko4; Wang, Pengfei1,3 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2017-12-14 |
| 卷号 | 5期号:46页码:12077-12084 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c7tc04025c |
| 英文摘要 | The photophysical properties of three TX-based D-A isomers (TXO-PhCz1, TXO-PhCz3, and TXO-PhCz4) with a PhCz donor at different substitution positions of phenyl group on a TXO unit were investigated. The substitution position of the PhCz unit significantly impacts the photophysical properties of these isomers. TXO-PhCz1 exhibits a very weak emission in both undoped and doped films, while TXO-PhCz3 and TXO-PhCz4 exhibit a strong emission with the requisite properties for TADF emitters, including a small Delta E-ST and transient PL decay curves with a prompt and delayed fluorescent component. TXO-PhCz4 exhibits a much stronger orbital coupling than TXO-PhCz3 and then the phosphorescent emission causes the inverse temperature dependence of the transient PL decay, which is contrary to that of TXO-PhCz3 and other TADF emitters. TXO-PhCz4 exhibits a small Delta E-ST of 23 meV and a short decay time of 14 mu s at room temperature, which are much smaller and shorter than those of TXO-PhCz3. Multilayer OLEDs based on TXO-PhCz4 exhibit a very low-efficiency roll-off with a maximum current efficiency of 49.2 cd A(-1), a maximum power efficiency of 47.7 lm W-1, and a maximum EQE of 16.3%. |
| 语种 | 英语 |
| WOS记录号 | WOS:000416540600011 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45111]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yi, Yuanping; Wang, Ying |
| 作者单位 | 1.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Japan Adv Inst Sci & Technol, Sch Mat Sci, Nomi, Ishikawa 9231292, Japan |
| 推荐引用方式 GB/T 7714 | Wei, Xiaofang,Chen, Yongzhen,Duan, Ruihong,et al. Triplet decay-induced negative temperature dependence of the transient photoluminescence decay of thermally activated delayed fluorescence emitter[J]. JOURNAL OF MATERIALS CHEMISTRY C,2017,5(46):12077-12084. |
| APA | Wei, Xiaofang.,Chen, Yongzhen.,Duan, Ruihong.,Liu, Jianjun.,Wang, Ruifang.,...&Wang, Ying.(2017).Triplet decay-induced negative temperature dependence of the transient photoluminescence decay of thermally activated delayed fluorescence emitter.JOURNAL OF MATERIALS CHEMISTRY C,5(46),12077-12084. |
| MLA | Wei, Xiaofang,et al."Triplet decay-induced negative temperature dependence of the transient photoluminescence decay of thermally activated delayed fluorescence emitter".JOURNAL OF MATERIALS CHEMISTRY C 5.46(2017):12077-12084. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。