DR NIR TADF-OLEDs · Development of Efficient, Stable and Inexpensive Deep-Red and Near-Infrared OLEDs Based On AIE-Active Thermally Activated Delayed Fluorescence Emitters.

Development of Efficient, Stable and Inexpensive Deep-Red and Near-Infrared OLEDs Based On AIE-Active Thermally Activated Delayed Fluorescence Emitters.

This action aimed to develop efficient, stable, and inexpensive deep-red (DR) and near-infrared (NIR) organic light-emitting diodes (OLEDs) using aggregation-induced emission (AIE)-active thermally activated delayed fluorescence (TADF) emitters. The development of highly efficient DR and NIR TADF OLEDs is challenging, primarily due to the inherent limited brightness of DR and NIR emissive materials, which tend to have naturally low photoluminescence quantum yields (PLQY). This work thus aims to overcome the challenges posed by the low PLQYs of DR and NIR emissive materials by developing new emitters containing boron-dominant AIE and TADF characteristics. The significance of this action lies in the potential applications of these DR and NIR OLEDs beyond their use in displays and lighting, encompassing a wide array of domains such as bioimaging, photodynamic therapy, night vision technology, secure information displays, and optical communication. The objectives of this Marie Skłodowska Curie Action (MSCA) have been (1) to develop DR and NIR TADF emitters exhibiting high PLQY and (2) to demonstrate superior external quantum efficiency (EQE) in non-doped OLEDs, which will be accomplished through efficient AIE-active emitters, as these emitters show enhanced PLQY in the condensed phase.

Data: CORDIS, © European Union