Surfing the Color Map with Carbazole-Appended Cyclometalated N-Heterocyclic Carbene Pt Complexes and Their Application in Green Organic Light-Emitting Devices
J. Roy, M. Forzatti, A. Martín, I. Ara, E. Stanzani, S. Jenatsch, H. J. Bolink, S. Fuertes, D. Tordera, V. Sicilia, . Adv. Optical Mater. 2025, 2500051. https://doi.org/10.1002/adom.202500051
This research article published in March 2025 focuses on the synthesis and application of novel platinum (II) complexes, specifically carbazole-appended cyclometalated N-heterocyclic carbenes, as emitters in organic light-emitting devices (OLEDs). The research details the stage-wise creation of new complexes (1A/B, 2A/B, 3A/B) and characterises their electrochemical and photophysical properties, including their bright phosphorescent emission in the blue to blue-green spectrum. A significant finding is the influence of doping concentration on emission colour, particularly for complex 1A, which shifts from blue to yellowish-green due to aggregate formation. The paper concludes by presenting the high performance of OLEDs using these complexes, with notable efficiency achieved through ultrathin, non-doped emissive layers.
How Fluxim´s R&D Tools supported this work
Phelos was used to measure the angle- and polarization-dependent light emission of the OLED devices.
Paios was used for transient electroluminescence decay measurements.
Setfos was used for optical device simulations, including cavity effects.
These tools played a key role in understanding and optimizing the photophysical and electroluminescent behavior of the platinum complexes in OLEDs