Flexible and tandem quantum-dot light-emitting diodes with individually addressable red/green/blue emission  

作　　者：Qiang Su Heng Zhang Shuming Chen 

机构地区：[1]Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,People’s Republic of China [2]Key Laboratory of Energy Conversion and Storage Technologies(Southern University of Science and Technology),Ministry of Education,Shenzhen,People’s Republic of China

出　　处：《npj Flexible Electronics》2021年第1期68-72,共5页npj-柔性电子（英文）

基　　金：supported by the National Natural Science Foundation of China(61775090);the Guangdong Natural Science Funds for Distinguished Young Scholars(2016A030306017).

摘　　要：Tandem quantum-dot light-emitting diodes(QLEDs)with multiple QLED elements vertically connected by the intermediate electrodes offer the advantages of high brightness and long lifetime.However,it is challenging to individually address each QLED element in conventional tandem structures.To address this challenge,here,transparent QLEDs built on flexible plastic substrates are developed as the building blocks for the tandem QLEDs.By vertically integrating a red,a green,and a blue transparent QLEDs with an ultraviolet glue,the resultant tandem QLED can emit separately controllable red/green/blue(R/G/B)emission with an external quantum efficiency(EQE)of 12.0%/8.5%/4.5%,respectively.Enabled by the transparent and extractable IZO electrodes,the QLED elements can also be connected in series or in parallel with an EQE of 24.8%or 8.2%,respectively.Our work provides a new implementation strategy for the realization of tandem QLEDs with individually addressable R/G/B emission for both display and lighting applications.

关 键 词：DIODES quantum TRANSPARENT 

分 类 号：TN3[电子电信—物理电子学]