Harvesting Triplet Excitons with Exciplex Thermally Activated Delayed Fluorescence Emitters toward High Performance Heterostructured Organic Light-Emitting Field Effect Transistors
文献类型：期刊论文
| 作者 | Song, L.; Y. S. Hu; Z. Q. Liu; Y. Lv; X. Y. Guo and X. Y. Liu |
| 刊名 | Acs Applied Materials & Interfaces
 |
| 出版日期 | 2017 |
| 卷号 | 9期号:3 |
| 英文摘要 | The utilization of triplet excitons plays a key role in obtaining high emission efficiency for organic electroluminescent devices. However, to date, only phosphorescent materials have been implemented to harvest the triplet excitons in the organic light-emitting field effect transistors (OLEFETs). In this work, we report the first incorporation of exciplex thermally activated delayed fluorescence (TADF) emitters in heterostructured OLEFETs to harvest the triplet excitons. By developing a new kind of exciplex TADF emitter constituted by m-MTDATA (4,4',4 ''-tris (N-3-methylphenyl-N-phenylamino)triphenylamine) a as the donor and OXD-7 (1,3-bis[2-(4-tert-butylpheny1)-1,3,4-oxadiazo-5-yl]benzene) as the acceptor, an exciton utilization efficiency of 74.3% for the devices was achieved. It is found that the injection barrier between hole transport layer and emission layer as well as the ratio between donor and acceptor would influence the external quantum efficiency (EQE) significantly. Devices with a maximum EQE of 3.76% which is far exceeding the reported results for devices with conventional fluorescent emitters were successfully demonstrated. Moreover, the EQE at high brightness even outperformed the result for organic light emitting diode based on the same emitter. Our results demonstrate that the exciplex TADF emitters can be promising candidates to develop OLEFETs with high performance. |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/59193]  |
| 专题 | 长春光学精密机械与物理研究所_中科院长春光机所知识产出 |
| 推荐引用方式 GB/T 7714 | Song, L.,Y. S. Hu,Z. Q. Liu,et al. Harvesting Triplet Excitons with Exciplex Thermally Activated Delayed Fluorescence Emitters toward High Performance Heterostructured Organic Light-Emitting Field Effect Transistors[J]. Acs Applied Materials & Interfaces,2017,9(3). |
| APA | Song, L.,Y. S. Hu,Z. Q. Liu,Y. Lv,&X. Y. Guo and X. Y. Liu.(2017).Harvesting Triplet Excitons with Exciplex Thermally Activated Delayed Fluorescence Emitters toward High Performance Heterostructured Organic Light-Emitting Field Effect Transistors.Acs Applied Materials & Interfaces,9(3). |
| MLA | Song, L.,et al."Harvesting Triplet Excitons with Exciplex Thermally Activated Delayed Fluorescence Emitters toward High Performance Heterostructured Organic Light-Emitting Field Effect Transistors".Acs Applied Materials & Interfaces 9.3(2017). |
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