Highly Efficient Organic Light-Emitting Diodes with Low Efficiency Roll-Off Based on Iridium Complexes Containing Pinene Sterically Hindered Spacer

ADVANCED OPTICAL MATERIALS

WILEY-V C H VERLAG GMBH

1. Major State Basic Research Development Program [2013CB922101]
2. National Natural Science Foundation of China [21371093, 91433113, 21301095]
3. Natural Science Foundation of Jiangsu Province [BK20130054]