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

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Optimizing Perovskite LEDs and Tandem PV Cells: The Role of Photon-Recycling and Luminescent Coupling in Presence of Strong Light Scattering

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