research
We are studying a new class of organic semiconductor based on radical materials with unpaired electrons and an unusual combination of optical, spin (doublet, S = 1/2) and magnetic properties.
Recently we discovered that emitters based on triphenylmethyl radical derivatives can be be used to produce the most efficient organic light-emitting diodes in the infrared range [1]. The high efficiency of these devices was attributed to radical OLEDs operating entirely within the doublet-spin manifold, and avoiding the formation of singlet and triplet excitons which limit the performance in standard (non-radical) organic semiconductors. We also succeeded in stabilising radical emitters with non-Aufbau configurations [2] and obtaining molecular design rules to make them more emissive [3].
Our research on the photo- and spin physics of organic radical materials is designed to unlock new opportunities in optoelectronics, spintronics and quantum technologies.
We use magneto-optical spectroscopy and spin resonance methods to lead device and technology strategies beyond the state of the art.
