High-performance all-solution-processed inverted quantum dot light-emitting diodes enabled by water treatment
作者机构：College of Optical and Electronic TechnologyChina Jiliang UniversityHangzhou 310018China Key Laboratory of Excited-State Materials of Zhejiang ProvinceState Key Laboratory of Silicon MaterialsDepartment of ChemistryZhejiang UniversityHangzhou 310027China Institute of Flexible Electronics Technology of THUZhejiangJiaxing Key Laboratory of Flexible Electronics based Intelligent Sensing and Advanced Manufacturing TechnologyJiaxing 314000China Zhejiang Najing Technology Co.Ltd.Quzhou 324004China Najing Technology Corporation Ltd.Hangzhou 310052China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第7期
页 面：10215-10221页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学]
基 金：This work was financially supported by the National Natural Science Foundation of China(Nos.61905230,52072355,11904345,52103241,and 61904160) Natural Science Foundation of Zhejiang Province(No.LQ19F040004) the Liu Zugang Expert Workstation of Yunnan Province
主 题：solvent-resistance quantum dots inverted electroluminescence all solution processing
摘 要：All-solution-processed inverted quantum dot(QD)light-emitting diodes(QLEDs)with transparent bottom cathodes can be directly connected to the n-type thin-film transistors,offering a feasible solution for low-cost active matrix-driven QD ***,the subsequent solution-deposition of the hole-transporting layer destroys the underneath QD films,resulting in largely deteriorated device *** strategies have been implemented to prevent QD film from dissolution,but all at a heavy cost of device performance suffering from either reduced efficiency or increased driving ***,a facile and effective water-treatment approach for QD film to fabricate inverted QLEDs through all solution processing is *** water treatment substitutes the long-chain oleate ligands with hydroxyl groups,resulting in significantly improved non-polar solvent resistance of the QD ***,the QD films reserve their excellent photoluminescence efficiency after water *** the water-treated QD film as the emissive layer,all-solution-processed inverted red QLED with a peak external quantum efficiency of 19.6%,a turn-on voltage of 1.8 V,and a T50 operational lifetime of 150,000 h at 100 cd·m^(-2) was ***,efficient and low-voltage-driven green and blue QLEDs can also be prepared with this *** work provides a feasible strategy for the fabrication of high-performance all-solution-processed inverted QLEDs,paving the way toward achieving QLEDs by all ink-jet printing.
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