The scientific and technological concept underpinning this project is on the development of novel doublet emitting materials based on radical-donor type organic compounds for red/ near-infrared (NIR) light-emitting sources, which exploit newly developed organic open-shell radical emitters. Red/ near-infrared-emitting devices are used in several fields, including optical communication, security, bio detection and photodynamic/photothermal therapy. A challenge that needs to be overcome to achieve good performance of optical communications in NIR is to employ active emissive layers in organic light emitting diodes (OLEDs) exhibiting highly efficient emission with the short lifetimes. The organic emitters with efficient NIR emission are less developed since multi-phonon emission reduces radiative luminescence quantum yields for lower gap organic semiconductors as well as omits narrowband pure-colour emission. We believe that the short emission lifetime of doublet emitters suggests that radiative decay occurs as fluorescence which can boost device efficiency when used in the active layers of OLEDs.
Project funding:
Projects funded by the Research Council of Lithuania (RCL), Projects carried out by researchers’ teams
Project results:
The aim of the project is design and testing of new red/NIR emitting radicals in OLEDs for optical communication applications. It is planned to investigate the optical, photophysical, and photoelectrical properties of the newly synthesized compounds. The possibilities of synergy of these properties as well as the applicability of the newly developed materials in OLEDs will be evaluated, thus will help speed-up the emerging markets of biosensing and internet of things.
Period of project implementation: 2024-09-02 - 2027-08-31
Project coordinator: Kaunas University of Technology
Project partners: Julius-Maximilian University of Würzburg (JMU), National University of Taiwan
