[1] Tang C W. VanSlyke S A. Organic electroluminescent diodes[J]. Applied Physics Letters, 51, 913-915(1987).
[14] Li Y N, Zhou L, Jiang Y L et al. Green organic light-emitting devices with external quantum efficiency up to nearly 30% based on an iridium complex with a tetraphenylimidodiphosphinate ligand[J]. RSC Advances, 6, 63200-63205(2016).