Xiao Xin-Ming, Zhu Long-Shan, Guan Yu, Hua Jie, Wang Hong-Mei, Dong He, Wang Jin. Highly efficient all-phosphorescent white organic light-emitting diodes with low efficiency roll-off and stable-color by managing triplet excitons in emissive layerJ. Acta Physica Sinica, 2020, 69(4): 047202. DOI: 10.7498/aps.69.20191594