Due to the high internal quantum efficiency, broad emission colour tuning, harm-less materials, cost-efficient production, etc., further research and development of organic light-emitting diodes (OLEDs) can enable this promising energy-saving technology to reach greater energy sustainability in our countries. There is an excellent probability that OLEDs will shove out from the display and lighting market inorganic analogues based on phosphorescent complexes or quantum dots with toxic and scarce transition metal ions. Before that, certain limitations should be overcome including the lack of efficient far-red and near-infrared (FR/NIR) OLEDs based on narrow-bandgap emitters which suffer from the high probability of non-radiative energy dissipation according to the energy gap law. We propose to solve this problem by forming quantum wells in FR/NIR OLED structures. Efficient FR/NIR OLEDs are the main objectives of this project. The overall aim of this project is to develop efficient light-emitting nanostructures forming quantum wells for FR/NIR OLEDs and investigate the fundamental and applied aspects of such structures in relation to device efficiency. Specifically, the project aims to develop polaronic light-emitting layers that will enable the state-of-the-art characteristics of FR/NIR OLEDs (e.g. external quantum efficiency (EQE) of higher than 10 % and electroluminescent spectra with full-widths at half maxima of smaller than 50 nm).
Project funding:
Intergovernmental programme administrated by Research Council of Lithuania: Lithuania–Ukraine
Project results:
The expected results of the project.
• Anticipate publishing at least 3 joint papers over two years
• Provide excellent opportunities for PhD students to thrive in this international collaboration
• To attract public/private funding for joint R&D projects.
Period of project implementation: 2024-01-23 - 2025-12-31
Project coordinator: Kaunas University of Technology
