Harvesting Triplet Excitons with Exciplex Thermally Activated Delayed Fluorescence Emitters toward High Performance Heterostructured Organic Light-Emitting Field Effect Transistors

	Harvesting Triplet Excitons with Exciplex Thermally Activated Delayed Fluorescence Emitters toward High Performance Heterostructured Organic Light-Emitting Field Effect Transistors
	Song, L.; Y. S. Hu; Z. Q. Liu; Y. Lv; X. Y. Guo and X. Y. Liu
	2017
发表期刊	Acs Applied Materials & Interfaces
卷号	9 期号:3
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.
收录类别	sci ; ei
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59193
专题	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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