Institute of Molecular Functional Materials and Department of Chemistry, Hong Kong Baptist University , Waterloo Road, Kowloon Tong, Hong Kong P.R. China ; HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen, 518057, P.R. China.
Department of Electrical and Electronic Engineering, Southern University of Science and Technology , Shenzhen, 518055, P.R. China.
ACS Appl Mater Interfaces. 2017 Nov 22;9(46):40497-40502. doi: 10.1021/acsami.7b09172. Epub 2017 Nov 10.
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).
五种深蓝色碳烯基铱（III）荧光粉被合成并进行了表征。有趣的是，其中一种可以通过改变主体材料和激子阻挡层来制备成深蓝色、天蓝色和白色有机发光二极管（OLED）。这些深蓝色和天蓝色器件的国际照明委员会（CIE）坐标分别为（0.145，0.186）和（0.152，0.277），外量子效率（EQE）分别为 15.2%和 9.6%。通过选择具有合适最低未占据分子轨道（LUMO）能级的主体，深蓝色器件的 EQE 可以进一步提高到 19.0%。
