Influence of Light-Matter Interaction on Efficiency of Quantum-Dot Light-Emitting Diodes

Tian，Fengshou; Yuan，Cuixia; Chen，Shuming

2022-11-10

10.1021/acs.jpclett.2c02815

Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

1948-7185

Light-matter interaction can affect the radiative decay rate of excitons and thus the emission quantum yield (QY) of quantum dots (QDs). In this work, light-matter interaction and outcoupling efficiency of QD light-emitting diodes with different structures are investigated experimentally and theoretically. We show that the external quantum efficiency (EQE) of top-emitting devices is higher than that of the bottom-emitting devices, which is mainly due to the stronger light-matter interaction and higher light outcoupling efficiency of the top-emitting structures. In addition, we show that the QY enhancement induced by light-matter interaction is more significant for low-QY QDs. Our results suggest that top-emitting structures are more powerful for improving the EQE of devices built with low-QY QDs.

SCI

英语

NI论文

第一 ; 通讯

[62174075] ; [JCYJ20210324105400002] ; [JCYJ20220530113809022] ; [2020ZDZX3062]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000878897700001

AMER CHEMICAL SOC

2-s2.0-85141445638

Scopus

Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Tian，Fengshou,Yuan，Cuixia,Chen，Shuming. Influence of Light-Matter Interaction on Efficiency of Quantum-Dot Light-Emitting Diodes[J]. Journal of Physical Chemistry Letters,2022,13(44):10312-10317.

Tian，Fengshou,Yuan，Cuixia,&Chen，Shuming.(2022).Influence of Light-Matter Interaction on Efficiency of Quantum-Dot Light-Emitting Diodes.Journal of Physical Chemistry Letters,13(44),10312-10317.

Tian，Fengshou,et al."Influence of Light-Matter Interaction on Efficiency of Quantum-Dot Light-Emitting Diodes".Journal of Physical Chemistry Letters 13.44(2022):10312-10317.