(untitled) - Wang, N; Cheng, L; Ge, R; Zhang, S; Miao, Y; Zou, W; Yi, C; Sun, Y; Cao, Y; Yang, R; Wei, Y; Guo, Q; Ke, Y; Yu, M; Jin, Y; Liu, Y; Ding, Q; Di, D; Yang, L; Xing, G; Tian, H; Jin, C; Gao, F; Friend, R H; Wang, J; Huang, W (Nat. Photonics, 2016)