Asymmetric Wettability Interfaces Induced a Large-Area Quantum Dot Microstructure toward High-Resolution Quantum Dot Light-Emitting Diodes

2019 ◽  
Vol 11 (31) ◽  
pp. 28520-28526 ◽  
Author(s):  
Xiaoxun Li ◽  
Binbin Hu ◽  
Zuliang Du ◽  
Yuchen Wu ◽  
Lei Jiang
Keyword(s):  
High Resolution ◽  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Large Area ◽  
Light Emitting

scholarly journals Efficient and large-area all vacuum-deposited perovskite light-emitting diodes via spatial confinement

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Peipei Du ◽  
Jinghui Li ◽  
Liang Wang ◽  
Liang Sun ◽  
Xi Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Scale ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Scale Production ◽  
Nonradiative Recombination ◽  
Large Area ◽  
Spatial Confinement ◽  
Light Emitting ◽  
Large Scale Production

AbstractWith rapid advances of perovskite light-emitting diodes (PeLEDs), the large-scale fabrication of patterned PeLEDs towards display panels is of increasing importance. However, most state-of-the-art PeLEDs are fabricated by solution-processed techniques, which are difficult to simultaneously achieve high-resolution pixels and large-scale production. To this end, we construct efficient CsPbBr3 PeLEDs employing a vacuum deposition technique, which has been demonstrated as the most successful route for commercial organic LED displays. By carefully controlling the strength of the spatial confinement in CsPbBr3 film, its radiative recombination is greatly enhanced while the nonradiative recombination is suppressed. As a result, the external quantum efficiency (EQE) of thermally evaporated PeLED reaches 8.0%, a record for vacuum processed PeLEDs. Benefitting from the excellent uniformity and scalability of the thermal evaporation, we demonstrate PeLED with a functional area up to 40.2 cm2 and a peak EQE of 7.1%, representing one of the most efficient large-area PeLEDs. We further achieve high-resolution patterned perovskite film with 100 μm pixels using fine metal masks, laying the foundation for potential display applications. We believe the strategy of confinement strength regulation in thermally evaporated perovskites provides an effective way to process high-efficiency and large-area PeLEDs towards commercial display panels.

Fabrication of Large‐Area Uniform Nanometer‐Thick Functional Layers and Their Stacks for Flexible Quantum Dot Light‐Emitting Diodes

Small Methods ◽  
2021 ◽  
pp. 2101030
Author(s):  
Weimin Zhang ◽  
Jinhong Du ◽  
Qinwei Wei ◽  
Dingdong Zhang ◽  
Songfeng Pei ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Large Area ◽  
Light Emitting

High‐Resolution Pixelated Light Emitting Diodes Based on Electrohydrodynamic Printing and Coffee‐Ring‐Free Quantum Dot Film

2020 ◽  
Vol 5 (10) ◽  
pp. 2000401
Author(s):  
Hegeng Li ◽  
Yongqing Duan ◽  
Zhilong Shao ◽  
Guannan Zhang ◽  
Huayang Li ◽  
...  
Keyword(s):  
High Resolution ◽  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Coffee Ring ◽  
Electrohydrodynamic Printing

scholarly journals Colour-Encoded Electroluminescent White Light-emitting Diode Enabled by Perovskite-Cu-In-S Quantum Composites

2021 ◽  
Author(s):  
Seung-Bum Cho ◽  
Jung Inn Sohn ◽  
Sang-Seok Lee ◽  
Seung-Gyun Moon ◽  
Bo Hou ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Source ◽  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting Diode ◽  
Large Area ◽  
Solution Processed ◽  
Light Emitting ◽  
Ambient Lighting ◽  
White Light Emitting Diodes

Solution-processed quantum dot (QD) white light-emitting diodes (WLEDs) have received much attention as a viable light source in the next-generation large-area ambient lighting, flexible photonics and full-colour display backlighting technologies....

scholarly journals Optimization of Quantum Dot Thin Films using Electrohydrodynamic Jet Spraying for Solution-Processed Quantum Dot Light-Emitting Diodes

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Tuan Canh Nguyen ◽  
Thi Thu Thuy Can ◽  
Woon-Seop Choi
Keyword(s):  
Quantum Dot ◽  
High Performance ◽  
Large Scale ◽  
Light Emitting Diodes ◽  
Good Method ◽  
Large Area ◽  
Solution Processed ◽  
Light Emitting ◽  
Line Method ◽  
Straight Line

Abstract The electrohydrodynamic (EHD) jet spraying process is a good method for making quantum dot (QD) layers in light-emitting diodes (LEDs). However, controlling the morphology and large-scale fabrication of the QD layers are critical for realizing all-solution-processed QD-LEDs with high performance. Three spraying techniques were used with the EHD jet spraying technique: a big circular film method, a spiral-line method, and a straight-line method. These techniques were used to obtain QD films with good uniformity. The straight-line spray showed the most promise to obtain a uniform QD layer with large area, and QD-LEDs made with this method showed better performance with a low turn-on voltage of 3.0 V, a luminance of 7801 cd/m2, and a maximum current efficiency of 2.93 cd/A.

P-59: Toward High Resolution Inkjet-Printed Quantum Dot Light-Emitting Diodes for Next Generation Display

2016 ◽  
Vol 47 (1) ◽  
pp. 1354-1357 ◽  
Author(s):  
Jongseok Han ◽  
Donghyun Ko ◽  
Myeongjin Park ◽  
Jeongkyun Roh ◽  
Heeyoung Jung ◽  
...  
Keyword(s):  
High Resolution ◽  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Next Generation ◽  
Light Emitting

Toward high-resolution, inkjet-printed, quantum dot light-emitting diodes for next-generation displays

2016 ◽  
Vol 24 (9) ◽  
pp. 545-551 ◽  
Author(s):  
Jongseok Han ◽  
Donghyun Ko ◽  
Myeongjin Park ◽  
Jeongkyun Roh ◽  
Heeyoung Jung ◽  
...  
Keyword(s):  
High Resolution ◽  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Next Generation ◽  
Light Emitting
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