All-solution processed quantum dot light-emitting diodes with low turn-on voltage

Li-juan CAO; Cong-biao JIANG; Yu LUO; Miao-zi LI; Jia-li LI; Yang-ke CUN; Jian WANG; Jun-biao PENG; Yong CAO

doi:10.37188/YJYXS20203508.0785

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All-solution processed quantum dot light-emitting diodes with low turn-on voltage

Materials and Devices | 更新时间：2020-08-11

- All-solution processed quantum dot light-emitting diodes with low turn-on voltage
- Chinese Journal of Liquid Crystals and Displays Vol. 35, Issue 8, Pages: 785-794(2020)
- 作者机构：
  
  华南理工大学材料科学与工程学院, 广东广州 510640
- 作者简介：
- 基金信息：
- DOI：10.37188/YJYXS20203508.0785
  CLC： O482.31
- Received：06 January 2020，
  
  Revised：10 March 2020，
  
  Accepted：10 March 2020，
  
  Published：2020-08
- 稿件说明：
移动端阅览
Li-juan CAO, Cong-biao JIANG, Yu LUO, et al. All-solution processed quantum dot light-emitting diodes with low turn-on voltage[J]. Chinese journal of liquid crystals and displays, 2020, 35(8): 785-794.
DOI：

Li-juan CAO, Cong-biao JIANG, Yu LUO, et al. All-solution processed quantum dot light-emitting diodes with low turn-on voltage[J]. Chinese journal of liquid crystals and displays, 2020, 35(8): 785-794. DOI： 10.37188/YJYXS20203508.0785.

摘要

采用旋涂制备的纳米银（Silver nanoparticle，Ag NPs）作为阴极，制备了全溶液加工的红、绿、蓝量子点发光二极管（red，green，blue-quantum dots light-emitting diodes，R-，G-，B-QLEDs）。并针对溶液加工Ag NPs阴极器件启亮电压（Turn-on voltage，

）较蒸镀Ag阴极器件偏高的问题，采用了低真空与热退火组合工艺干燥Ag NPs阴极，实现了可以与真空蒸镀金属阴极比拟的

，R-，G-，B-QLEDs的

分别为1.9，2.6，3.2 V。实验结果表明，该阴极处理工艺可能为研制低

的全印刷显示发光器件提供新的工艺思路。

Abstract

All-solution processed red

green

blue-quantum dot light-emitting diodes (R-

G-

B-QLEDs) were fabricated by using spin-coated silver nanoparticles (Ag NPs) as the cathode. In order to solve the higher turn-on voltage (

) compared to QLEDs with vacuum deposited Ag cathode

a combination of low-vacuum and thermal annealing drying process was used to dry the Ag NPs cathode. With this new process

the

of R-

G-

B-QLEDs was reduced to 1.9 V

2.6 V

3.2 V

respectively

which was comparable to the devices with vacuum deposited Ag cathode. The results show that the cathode treatment process may provide a new process idea for fabricating fully printing display light-emitting devices with low

关键词

Keywords

references

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