Carboxymethyldextran Sodium Modified SnO2 Enables High Efficient and Stable Perovskite Solar Cells with high fill factor of 84.89 %

Carboxymethyldextran sodium (CMD) was used to modify tin dioxide to prepare highly efficient and stable SnO 2 -based perovskite solar cells, in which the filling factor was as high as 84.89%.