Performance and Interface of Inkjet-printed Cadmium(Cd)-based Green Quantum Dot Light-emitting Diodes

XIONG Xue-ying; WEI Chang-ting; SU Wen-ming; CUI Zheng

doi:10.3788/fgxb20194010.1274

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Performance and Interface of Inkjet-printed Cadmium(Cd)-based Green Quantum Dot Light-emitting Diodes

Device Fabrication and Physics | 更新时间：2020-08-12

- Performance and Interface of Inkjet-printed Cadmium(Cd)-based Green Quantum Dot Light-emitting Diodes
- Chinese Journal of Luminescence Vol. 40, Issue 10, Pages: 1274-1280(2019)
- 作者机构：
  
  1. 中国科学技术大学纳米技术与纳米仿生学院,安徽合肥,230026
  2. 中国科学院苏州纳米技术与纳米仿生研究所印刷电子技术研究中心,江苏苏州,215123
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(U1605244)
- DOI：10.3788/fgxb20194010.1274
  CLC： TN383+.1
- Received：24 April 2019，
  
  Revised：24 May 2019，
  
  Published Online：27 May 2019，
  
  Published：05 October 2019
- 稿件说明：
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熊雪莹, 魏昌庭, 苏文明等. 喷墨打印镉基绿光量子点发光二极管及其界面[J]. 发光学报, 2019,40(10): 1274-1280

XIONG Xue-ying, WEI Chang-ting, SU Wen-ming etc. Performance and Interface of Inkjet-printed Cadmium(Cd)-based Green Quantum Dot Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2019,40(10): 1274-1280
熊雪莹, 魏昌庭, 苏文明等. 喷墨打印镉基绿光量子点发光二极管及其界面[J]. 发光学报, 2019,40(10): 1274-1280 DOI： 10.3788/fgxb20194010.1274.

XIONG Xue-ying, WEI Chang-ting, SU Wen-ming etc. Performance and Interface of Inkjet-printed Cadmium(Cd)-based Green Quantum Dot Light-emitting Diodes[J]. Chinese Journal of Luminescence, 2019,40(10): 1274-1280 DOI： 10.3788/fgxb20194010.1274.

摘要

喷墨打印镉基量子点发光二极管（QLEDs）有望应用于大尺寸全彩显示面板且具有材料利用率高的特点而广受关注。但目前喷墨打印器件效率远低于旋涂制备的同结构器件，针对这一问题，本文研究了在PVK空穴传输层上喷墨打印绿光量子点器件及量子点墨水溶剂对传输层界面的影响。研究发现，喷墨打印过程中的层间互溶是影响器件效率的关键，在采用正交溶剂结合喷墨工艺优化实现了高质量的膜层与界面后，获得了6.3%的喷墨印刷绿光QLEDs外量子效率。

Abstract

Inkjet-printed quantum dot light-emitting diodes(QLEDs) have received widely attention

owing to their potential for use in large-area full-color pixelated display with high material utilization. However

the performance of the inkjet-printed QLEDs is always inferior to the spin coated devices with the same structure. In this study

the performance of the inkjet-printed green QLEDs based on PVK layer and the effects of quantum dot ink formula on transport layer interfaces were investigated. It is revealed that layer erosion is a key issue for performance of inkjet-printed QLEDs. An external quantum efficiency of 6.3% was achieved in inkjet-printed green QLEDs with high-quality film and interface by employing the orthogonal solvent

via

optimizing inkjet printing technology.

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references

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