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Full-color capable light-emitting diodes based on solution-processed quantum dot layer stacking

delete2018-01-01
delete47
PRE
AI
K
Ki‐Heon Lee
C
Chang-Yeol Han
E
Eun‐Pyo Jang
J
Jung‐Ho Jo
S
Seungki Hong
J
Jun Yeon Hwang
E
Eunsoo Choi
J
Jin‐Ha Hwang
H
Heesun Yang *
DOI:10.1039/c8nr00307fdelete
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摘要

摘要

En 中文
To date, most of the studies on quantum dot-light-emitting diodes (QLEDs) have been dedicated to the fabrication of high-efficiency monochromatic devices. However, for the ultimate application of QLEDs to the next-generation display devices, QLEDs should possess a full-color emissivity. In this study, we report the fabrication of all-solution-processed full-color-capable white QLEDs with a standard device architecture, where sequentially stacked blue (B)/green (G)/red (R) quantum dot (QD)-emitting layers (EMLs) are sandwiched by poly(9-vinylcarbazole) as the hole transport layer and ZnO nanoparticles (NPs) as the electron transport layer. To produce interlayer mixing-free, well-defined B/G/R QD layering assemblies via successive spin casting, an ultrathin ZnO NP buffer is inserted between different-colored QD layers. The present full-color-capable white QLED exhibits high device performance with the maximum values of 16241 cd m(-2) for luminance and 6.8% for external quantum efficiency. The promising results indicate that our novel EML design of ZnO NP buffer-mediated QD layer stacking may afford a viable means towards bright, efficient full-color-capable white devices.
Keyword:
HIGHLY EFFICIENT
PERFORMANCE
DEVICES
MULTILAYER
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期刊

Nanoscale 封面图
Nanoscale
IF:
5.1
论文数:
3.0W
被引数:
11.6W

机构

H
Hongik University
学者数:
2.1K
论文数: 2.7K
被引数: 2.1K
K
korea institute of science & technology (kist)
学者数:
1.2W
论文数: 1.3W
被引数: 23
引用论文

引用论文

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