交流电场调控三端QLED器件制备与性能研究

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关键词：量子点发光二极管；三端器件；交流电场调控；载流子注入；外量子效率中图分类号：TN312.8 文献标识码：ADOI： 10.37188/CJL.20250237 CSTR：32170.14.CJL.20250237

Fabrication and Performance ofA Three-terminal QLED Device via AnACElectricFieldRegulation

ZHENG Cong，WENG Shuchen，LIUChenliang，LUHongsheng，SHEN Yifan， ZHOUXiongtu，ZHANGYongai* （CollegeofPhysicsand Information Engineering，Fuzhou University，Fuzhou 35o1o8，China） *Corresponding Author，E-mail：yongaizhang@fzu.edu.cn

Abstract：Quantum-dot light-emiting diodes（QLEDs）willbecomea promising candidate in the next-generation displaytechnology due to their high color purity，low power consumption and good solution processability.However， inthetraditional DC drive mode，QLED devices areconfronted with problems such assevere non-radiative recombination，effciencydegradationand insuficient stabilityduetounbalancedcarierinjections，which limit theiraplication inthe display field.Therefore，this paper proposesa three-terminal QLEDdevice structure basedon AC electricfieldregulation，whichoptimizes thecarrierbalancethroughdynamic modulationoftheelectricfieldandsignificantly enhances the device performance. Compared with traditional QLED devices，the external quantum effciency （EQE）of the three-terminal QLED device has increased from 7.5% to 18.3% ，and the brightness has increased from6842cd/m²to 10 374cd/m2 ，with increases of 143.7% and 51.6%，respectively.The experimental results showthatthe three-terminalQLEDdevice can accuratelycontroltheelectron mobilityand efectivelysuppress non-radiative recombination by utilizing the coordinated regulation of AC waveform，driving voltage and frequency.This solutionnotonlyefectivelysolves thetechnicalproblemof electron-holemobilitymismatch intraditionalQLED，but also provides anew technologicalapproach for thestructural designof high-performanceQLEDdevices，which is expected to promote the wide application of QLED devices in the display field.

KeyWords：quantum-dotlight-emiting diodes（QLEDs）；three-terminal device;ACelectricfield regulation；carrier injection；external quantum efficiency

1引言

近年来，胶体量子点（Quantumdots，QDs）由于具有发射宽度窄、发光效率高、发射波长可调等优异特性，在许多光电器件应用中具有显著优势，并得到了广泛研究3。（剩余12873字）