Nature
Shallow-level defect passivation by 6H perovskite polytype for highly efficient and stable perovskite solar cells - Nature Communications
The formation of the 6H polytype was achieved by the addition of 20% excess PbI2 (0.24 M) based on FAPbI3 (1.2 M), combined with 55 mol% methylammonium chloride (MACl, 0.66 M). The control film ...
6 days ago