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具有简单无掺杂结构的高效低工作电压黄色磷光有机发光二极管。

High efficiency and low operating voltage yellow phosphorescent organic light-emitting diodes with a simple doping-free structure.

作者信息

Hua Jie, Li Jiaxin, Zhan Zhuolin, Chai Yuan, Cheng Zeyuan, Li Peiding, Dong He, Wang Jin

机构信息

Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University Siping 136000 China

College of Information Technology, Jilin Normal University Siping 136000 China.

出版信息

RSC Adv. 2022 Aug 9;12(34):21932-21939. doi: 10.1039/d2ra03617g. eCollection 2022 Aug 4.

DOI:10.1039/d2ra03617g
PMID:36043073
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9362734/
Abstract

Yellow phosphorescent organic light-emitting diodes (PhOLEDs) with high efficiency and a low operating voltage were reported through using a simple doping-free structure. The structure of the PhOLEDs was ITO/C/MoO/mCP/PO-01-TB/PO-T2T/Liq/Al. The np-type C/MoO heterojunction acted as hole injection layer, and the ultrathin PO-01-TB layer (0.1 nm) was inserted at the interface between mCP and PO-T2T to serve as yellow phosphorescent emitter. Detailed investigation suggested that the complete energy transfer occurred from the mCP/PO-T2T interfacial exciplex to yellow PO-01-TB. Furthermore, the np-type C/MoO heterojunction could supply more free charge carriers, giving rise to further enhanced PhOLED efficiency. By adjusting the thickness of the C/MoO heterojunction, a yellow PhOLED with a power efficiency of 71.6 lm W was demonstrated with an extremely low operating voltage of 3.79 V at 1000 cd m.

摘要

通过使用简单的无掺杂结构，报道了具有高效率和低工作电压的黄色磷光有机发光二极管（PhOLED）。PhOLED的结构为ITO/C/MoO/mCP/PO-01-TB/PO-T2T/Liq/Al。np型C/MoO异质结用作空穴注入层，超薄的PO-01-TB层（0.1纳米）插入mCP和PO-T2T之间的界面，用作黄色磷光发射体。详细研究表明，从mCP/PO-T2T界面激基复合物到黄色PO-01-TB发生了完全的能量转移。此外，np型C/MoO异质结可以提供更多的自由电荷载流子，从而进一步提高PhOLED的效率。通过调整C/MoO异质结的厚度，展示了一种功率效率为71.6 lm/W的黄色PhOLED，在1000 cd/m²时工作电压极低，为3.79 V。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/28aac2751e3b/d2ra03617g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/c0897b8cbeb9/d2ra03617g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/c70f0bb8c6d3/d2ra03617g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/05a94567d591/d2ra03617g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/fc2045e96ce4/d2ra03617g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/af46512c7ca4/d2ra03617g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/170e68de9e3f/d2ra03617g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/28aac2751e3b/d2ra03617g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/c0897b8cbeb9/d2ra03617g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/c70f0bb8c6d3/d2ra03617g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/05a94567d591/d2ra03617g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/fc2045e96ce4/d2ra03617g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/af46512c7ca4/d2ra03617g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/170e68de9e3f/d2ra03617g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e440/9362734/28aac2751e3b/d2ra03617g-f7.jpg

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