Ink Formulation of Quantum Dots in Ink Jet Printing

被引：0
|
作者：
Guo B. [1 ]
Mu L. [1 ]
Luo Y. [1 ]
Li D.-Y. [1 ]
Wang J.-J. [1 ]
Li M.-Z. [1 ]
Peng J.-B. [1 ]
机构：
[1] State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2021年 / 42卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Ink formulation; Ink jet printing; Inverted structure; Quantum dot film; Quantum dot light-emitting diodes;
D O I：
10.37188/CJL.20210078
中图分类号：
学科分类号：
摘要：
In this paper, a two-solvent quantum dot ink system based on cyclohexylbenzene and octadecene was designed, and the film formation and luminescent properties of green quantum dots(QDs) with CdSe@ZnS/ZnS core/shell structure were investigated. The double solvent ink designed with high boiling point, low surface tension of octadecene and high boiling point, low surface tension of cyclohexylbenzene benzene can enhance the Marangoni effect, weaken the quantum dots accumulation on the edge of the pixel pits, and uniform pixel QDs films were achieved. The green quantum dot array light-emitting device with upside-down and top-emitting structure was fabricated with the threshold voltage of 2.7 V, a maximum brightness of 132 510 cd/m2 and a maximum external quantum efficiency of 14.0%. The results may provide a reference for the preparation of high-performance QD-LEDs array by inkjet printing technology. © 2021, Science Press. All right reserved.
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页码：880 / 888
页数：8
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