A chemical washing method called solvent sieve is developed to resolve the phase dimension issue of metal halide perovskites. The sieved perovskites demonstrate a record external quantum efficiency of 29.5% and a T50 lifetime of 18.67 h at 12,000 cd m−2; 80% of the device external quantum efficiency lasts for 100 days in the ambient.
- Shuo Ding
- Qiangqiang Wang
- Chaoyu Xiang
