IMID 2024, Jeju, Korea
August 20 - August 23, 2024 (Tue. - Fri.), ICC Jeju
Enhanced Optoelectrical Properties of Organic Light-Emitting Diodes
by ZnO Nanoparticles Reacted with Organic Solvents
Changhee Lee, Ryungyu Lee, Keun-Yeong Choi, and Hojin Lee
Abstract
In this study, we propose a novel post-processing method aimed at enhancing the Luminance of organic light-emitting diodes (OLEDs). This method leverages the reactivity between zinc oxide (ZnO) and organic solvents to improve device performance. Specifically, we aimed to increase the hole-to-electron matching ratio within the light-emitting layer by deliberately reducing the number of oxygen vacancies. These vacancies serve as pathways for carrier movement, and their reduction through the reaction of ZnO particles with organic solvents results in lowered electron injection. Consequently, this modification effectively increases the generation of excitons in the post-processed devices, leading to a significant improvement in luminance.
IMID 2024, Jeju, Korea
