Aging behaviors of QLED with different structures

Chen，Zinan; Qin，Zhiyuan; Zhou，Xinyi; Long，Jingwei; Chen，Shuming

10.1002/sdtp.13004

2019

0097-966X

2168-0159

Digest of Technical Papers - SID International Symposium

50

Book 2

656-659

Quantum dot light-emitting diodes (QLEDs) are recognized as one of the candidates for the development of next generation displays. However the stability issue restricts their industrialization. In this work, we investigated the aging behaviors of QLEDs with different structures. We identified that the lifetime of QLEDs is greatly affected by the hole transport layer (HTL). In addition, we found that devices encapsulated with and without desiccant exhibit different aging behaviors. The use of desiccant improved the stability of the HTL, but the positive aging which could prolong the lifetime of devices was alleviated. On the other hand, device without desiccant exhibited positive aging behavior but the HTL was degraded rapidly. It is concluded that there is a trade-off between positive aging and stability of HTL.

Aging behavior Capacitance-voltage characteristics Hole transport layer Positive aging QLED

通讯

英语

EI

20200908241691

Driers (materials) ; Economic and social effects ; Hole mobility ; Semiconductor quantum dots ; Organic light emitting diodes (OLED)

Electricity: Basic Concepts and Phenomena:701.1 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Social Sciences:971

2-s2.0-85081153837

Scopus

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

Chen，Zinan,Qin，Zhiyuan,Zhou，Xinyi,et al. Aging behaviors of QLED with different structures[C],2019:656-659.