Design and fabrication of efficient, stable and cheap blue organic light-emitting diodes as components of full-colour displays and solid state lighting

Organic light-emitting diode (OLED) technology has undergone a rapid development in the last 20-years, defining a steeply growing worldwide market of small devices, like smart phones, tablets, TV displays and lighting sources.

Despite the significant progress achieved in this field, the production of blue monochromatic materials for OLEDs remains an important problem.

Implementation of such blue emitters in display and lighting technologies is limited due to low lifetime and a high roll-off efficiency in electroluminescent devices. Moreover, wide electroluminescence spectra of the materials frequently do not meet the requirements of colour purity.

Thus, the main goal of our project is to design and synthesize new blue-emitting materials able to avoid above mentioned limitations and implement these materials into real blue OLEDs.

Based on our previous studies, we will, among a large variety of possible target materials, focus on organic derivatives of blue-emissive Schiff bases, benzofurane oligomers, perchalcogenated arenes and heterocirculenes.

We will utilize some specific phenomena, like temperature-activated delayed fluorescence (TADF) to enhance the performance of OLEDs and open up the possibilities for color tuning of the devices.

In this project we will combine modern theoretical approaches with the most recent experimental achievements in organic synthesis and device fabrication in order to provide a substantial development in the field of blue OLEDs.