Cyclometalated Iridium(III) Carbene Phosphors for Highly Efficient Blue Organic Light-Emitting Diodes

ACS Applied Materials & Interfaces
Zhao ChenWai-Yeung Wong

Abstract

Five deep blue carbene-based iridium(III) phosphors were synthesized and characterized. Interestingly, one of them can be fabricated into deep blue, sky blue and white organic light-emitting diodes (OLEDs) through changing the host materials and exciton blocking layers. These deep and sky blue devices exhibit Commission Internationale de l'Éclairage (CIE) coordinates of (0.145, 0.186) and (0.152, 0.277) with external quantum efficiency (EQE) of 15.2% and 9.6%, respectively. The EQE of the deep blue device can be further improved up to 19.0% by choosing a host with suitable energy level of its lowest unoccupied molecular orbital (LUMO).

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Citations

Apr 16, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Lin ZhangYou-Xuan Zheng
Aug 2, 2019·Chemical Science·Hanah NaThomas S Teets
Apr 13, 2021·Inorganic Chemistry·Louise M CañadaThomas S Teets
Dec 12, 2019·ACS Applied Materials & Interfaces·Ling-Yang HsuYun Chi
Oct 29, 2021·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Deming HanChunying Pang

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