Open AccessEnhancing light emission in flexible AC electroluminescent devices by tetrapod-like zinc oxide whiskers
Author(s) -
Li Wen,
Nishuang Liu,
Siliang Wang,
Hui Zhang,
Wanqiu Zhao,
Zhichun Yang,
Yumei Wang,
Jun Su,
Luying Li,
Fei Long,
Zhengguang Zou,
Yihua Gao
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.023419
Subject(s) - materials science , electroluminescence , phosphor , optoelectronics , brightness , field emission display , whiskers , electroluminescent display , polydimethylsiloxane , light emitting diode , nanotechnology , layer (electronics) , electrode , optics , anode , composite material , chemistry , physics
Flexible alternating current electroluminescent devices (ACEL) are more and more popular and widely used in liquid-crystal display back-lighting, large-scale architectural and decorative lighting due to their uniform light emission, low power consumption and high resolution. However, presently how to acquire high brightness under a certain voltage are confronted with challenges. Here, we demonstrate an electroluminescence (EL) enhancing strategy that tetrapod-like ZnO whiskers (T-ZnOw) are added into the bottom electrode of carbon nanotubes (CNTs) instead of phosphor layer in flexible ACEL devices emitting blue, green and orange lights, and the brightness is greatly enhanced due to the coupling between the T-ZnOw and ZnS phosphor dispersed in the flexible polydimethylsiloxane (PDMS) layer. This strategy provides a new routine for the development of high performance, flexible and large-area ACEL devices.