有效的矿发光二极管具有化学结合接触和受调电荷行为
Yaping Zhao1, Wenjing Feng1, Mingliang Li1,2
1Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, People's Republic of China.
Nano letters
|September 7, 2023
概括
这项研究引入了一种新的氧化物处理方法,用于矿发光二极管 (Pero-LED) 中的矿/电子输送层接口. 这种修改增强了充电注入和被动化,从而显著提高了设备效率和亮度.
科学领域:
- 材料科学 材料科学 材料科学
- 光电学是指光电子产品.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 高性能矿发光二极管 (Pero-LED) 需要有效的充电注入和辐射重组.
- 在矿排放层 (EML) 和电子输送层 (ETL) 界面上的物理接触和电荷注入障碍较差,限制了设备的性能.
研究的目的:
- 为了改善矿EML和ETL之间的接口接触.
- 为了减少充电注入障碍,并使接口上的缺陷被动化.
- 为了提高Pero-LED的整体效率和亮度.
主要方法:
- 使用一种氧化物,2,4,6-tris[3-(diphenylphosphinyl) phenyl]-1,3,5-triazine (PO-T2T),对矿/ETL接口进行处理.
- 通过PO-T2T和矿表面/颗粒边界之间的dative结合形成化学结合接触.
- 利用PO-T2T的高电子流动性来创建一个电子运输高速公路.
主要成果:
- 实现了最大的外部量子效率 (EQEmax) 22.06%和平均EQEmax 20.02 ± 1.00%.
- 获得了冠军设备的103286 cd m-2的最大亮度 (Lmax).
- 通过PO-T2T. 证明了非协调缺陷的有效被动化.
结论:
- 界面的修改对于制造高效的Pero-LED来说至关重要.
- PO-T2T处理成功地解决了接口问题,从而提高了设备的性能.
- 化学结合接触和缺陷被动化是推动Pero-LED技术发展的关键策略.
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