Circularly Polarized Near-Infrared Electroluminescence from Chromium(III) Complex-Based OLEDs Poncet, Maxime Jiménez Gallego, Juan Ramón Zinna, Francesco Piguet, Claude Di Bari, Lorenzo Botta, Chiara Giovanella, Umberto Organic light-emitting diodes (OLEDs) featuring circularly polarized (CP) electroluminescence (EL) are gaining tremendous attention for their potential in advanced display and photonic applications. Chiral organic molecules and 4d and 5d metal complexes have been extensively studied for their role in the emissive layer of these devices. Here, pioneering work demonstrating EL emission from a chromium(III) complex is presented. Notably, by leveraging the highly polarized spin-flip transitions of enantiopure CrIII complexes, a proof-of-concept device showcasing near-infrared (NIR) CP EL with peaks at 726 and 747 nm and corresponding dissymmetry values up to 0.015 and −0.029 is developed. These findings highlight the potential of earth-abundant CrIII complexes for cutting-edge chiral optoelectronic applications in medicine, security, and quantum communications 2025-11-24T12:27:36Z 2025-11-24T12:27:36Z 2025-11-18 journal article Poncet, M., Jiménez, J.-R., Zinna, F., Piguet, C., Di Bari, L., Botta, C., & Giovanella, U. (2025). Circularly polarized near-infrared electroluminescence from chromium(III) complex-based OLEDs. Small, e12638, e12638. https://doi.org/10.1002/smll.202512638 https://hdl.handle.net/10481/108270 10.1002/smll.202512638 eng info:eu-repo/grantAgreement/EU/PRTR/CNS2024-154176 http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Wiley