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Efficient and stretchable organic light-emitting devices based on spontaneously formed disordered wrinkles

Authors :
Zhi-Yu Chen
Ru-Jian Zhang
Yu-Ping Wang
Da Yin
Yue-Feng Liu
Yan-Gang Bi
Jing Feng
Source :
Optics Letters. 47:3744
Publication Year :
2022
Publisher :
Optica Publishing Group, 2022.

Abstract

We propose a facile, scalable strategy to introduce spontaneously formed disordered wrinkles into organic light-emitting devices (OLEDs) to enhance light extraction and realize stretchability of the devices. The luminance and current efficiency of the wrinkled OLEDs are improved by 37% and 18%, respectively, compared to the planar device. Meanwhile, broadband light scattering induced by the disordered wrinkles results in angle-stable electroluminescent spectra at wide viewing angles for the wrinkled OLEDs. The disordered wrinkles enable the OLEDs to be stretchable and withstand hundreds of stretching–releasing cycles at strain between 0% and 5%. This study provides a simple method to realize stretchable OLEDs with high efficiency.

Details

ISSN :
15394794 and 01469592
Volume :
47
Database :
OpenAIRE
Journal :
Optics Letters
Accession number :
edsair.doi.dedup.....d21bf64f44193b8d443bce5c3bb23835