Sub-Second Long Lifetime Triplet Exciton Reservoir for Highly Efficient and Stable Organic Light-Emitting Diode - Tang, Zhenyu; Lyu, Fang; Gu, Jiannan; Guo, Haoqing; Yu, Wenjin; Zou, Yu; Gong, Lefan; Tang, Rong; Qu, Bo; Guo, Xuan; Yan Chen; Deng, Yongkai; et al. (ADVANCED MATERIALS, 2024)