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30 September 2024 Deep blue highly efficient intra-metallic emitters
Paulius Imbrasas, Felix Kaden, Andre Barthel, Volodymyr Senkovskyy, Carsten Rothe
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Proceedings Volume 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII; 1312214 (2024) https://doi.org/10.1117/12.3027446
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States
Abstract
beeOLED, a German start-up, pioneers a solution to the well-known issue of short blue emitter lifetimes in OLED. Leveraging divalent Europium and its unique intra-metallic transition, beeOLED introduces a groundbreaking approach. Eu(II) features parity-allowed d-f transitions with a ~1 µs lifetime, comparable to widely-used phosphorescent emitters. With 100% internal quantum efficiency and a tunable deep-blue emission spectrum, beeOLED's Eu(II) complexes promise enhanced stability and longevity in OLEDs. By circumventing organic bond cleavage through single intra-metallic atom excitation, beeOLED overcomes typical issues encountered with organic blue emitters. Through rational ligand design, challenges of Eu(II) complex oxidation and sublimation are resolved. beeOLED is spearheading a new wave of robust and versatile blue OLED devices.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Paulius Imbrasas, Felix Kaden, Andre Barthel, Volodymyr Senkovskyy, and Carsten Rothe "Deep blue highly efficient intra-metallic emitters", Proc. SPIE 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII, 1312214 (30 September 2024); https://doi.org/10.1117/12.3027446
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KEYWORDS
Quantum emitters
Organic light emitting diodes
Photoluminescence
Plasma
Quantum devices
Quantum efficiency
Quantum enhancement
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