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Tailoring Nanostructures of Quantum Dots toward Efficient and Stable All-Solution Processed Quantum Dot Light-Emitting Diodes by Lixi Wang; Jiangyong Pan; Chengjun Liu; Zihan Zhao; Fan Fang; Ye Wang; Guangzhao Wang; Wei Lei; Jing Chen; Dewei Zhao is a Engineering article available to read on EtoBox.

What is Tailoring Nanostructures of Quantum Dots toward Efficient and Stable All-Solution Processed Quantum Dot Light-Emitting Diodes about?

Quantum dots (QDs) light-emitting diodes (QLEDs) are considered the most promising candidate for application in displays. While the efficiency of QLEDs has been greatly developed in recent years and is comparable to that of organic light-emitting diodes (OLEDs), it still remains challenging to realize both high efficiency and long lifetimes. In this work, we report efficient and stable red QLEDs with the maximum current efficiency of 13.48 cd A, external quantum efficiency of 18.65%, and low efficiency roll-off at high luminance with a long lifetime exceeding ∼2.9 × 10 h, representing a 3-fold increase in stability. Tailoring the composition of QDs suppresses nonradiative Förster resonant energy transfer and Auger recombination and provides favorable valence band alignment to boost the hole injection. Our work suggests that tailoring the nanostructures of QDs offers an effective means to simultaneously achieve high efficiency and high stability, accelerating QLED technology for practical applications in displays and lighting.

Who reads Tailoring Nanostructures of Quantum Dots toward Efficient and Stable All-Solution Processed Quantum Dot Light-Emitting Diodes?

Author

Lixi Wang; Jiangyong Pan; Chengjun Liu; Zihan Zhao; Fan Fang; Ye Wang; Guangzhao Wang; Wei Lei; Jing Chen; Dewei Zhao

Publisher

American Chemical Society (ACS)

Published

2021

Language

EN

Field

Engineering (Physical Sciences)