Green InP Quantum Dot Light‑emitting Diode with PVK Blend in Emitting Layer

被引：0
|
作者：
Liu S.-K. [1 ]
Luo Y. [1 ]
Wang J.-J. [1 ]
Guo B. [1 ]
Xiao Y. [1 ]
Wang P. [1 ]
Peng J.-B. [1 ]
机构：
[1] State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2022年 / 43卷 / 06期
基金：
中国国家自然科学基金;
关键词：
charge balance; energy transfer; InP quantum dot; polymer blend;
D O I：
10.37188/CJL.20220086
中图分类号：
学科分类号：
摘要：
A hybrid system of polyvinylcarbazole（PVK） and green indium phosphide（InP） quantum dots was designed to produce efficient light-emitting diodes（LEDs）. PVK functions as not only disperse quantum dots well and reduce agglomeration， but also significantly reduce non-radiative Förster energy transfer（FRET） among quantum dots， and improve the film’s photoluminescence efficiency（PLQY） from 24.2% to 30.1%. Meanwhile， the incorporation of PVK can improve the hole transport performance of the QD film via the carrier balance of the devices， making the maximum external quantum efficiency（EQE） of the devices reach 5.94%， which is 32% higher than that of the devices without PVK. This method can provide a reference for the development of high performance green InP QD-LEDs. © 2022 Chines Academy of Sciences. All rights reserved.
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页码：891 / 900
页数：9
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