Stable and bright formamidinium-based perovskite light-emitting diodes with high energy conversion efficiency

Yanfeng Miao, You Ke, Nana Wang, Wei Zou, Mengmeng Xu, Yu Cao, Yan Sun, Rong Yang, Ying Wang, Yunfang Tong, Wenjie Xu, Liangdong Zhang, Renzhi Li, Jing Li, Haiping He, Yizheng Jin, Feng Gao, Wei Huang, Jianpu Wang