Creating highly efficient stretchable OLEDs with nanowavy structures for angle-independent narrow band emission
Year: 2024
Type: article
Abstract: Stretchable organic light-emitting diodes (SOLEDs) have been the challenging class of OLED as they have limited processability to fabricate a design that can withstand external deformation. Herein, we demonstrated the first highly efficient geometrical stretchable top-emitting OLED by incorporating the prestretched optical adhesive film. Compared to a reference glass substrate, an optical adhesive substrate facilitates more extraction of light that would trap inside the device due to various light trapping modes. The experimental and theoretical characterizations verified the enhancement of device efficiencies with the light extraction phenomenon brought by the nanowavy corrugated structures. In addition, GSOLED shows stability in stretchable conditions and displayed a narrower emission spectrum with improved color purity by controlling the thickness of electrodes and organic layers. The full width at half maximum (FWHM) of 21 nm shows narrowband emission with a high current efficiency and EQE of 221 cd A − 1 and 51.30% respectively. This work marks a significant step forward, providing unprecedented insights into the factors influencing device performance in current and future material systems for stretchable organic light-emitting diodes.
Source: npj Flexible Electronics
Authors: Ajay Nimbalkar, Aqsa Irfan, Min Chul Suh
Institution: Kyung Hee University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,790
OpenAlex ID: W4402401830