Fabrication strategies for high quality halide perovskite films in solar cells are reviewed from the aspects of intermediate engineering, reaction-controlled, additive-controlled, and mass-controlled crystal growth.
All-inorganic two-dimensional Cs2PbI2(SCN)2 perovskite films with improved photoelectric properties were fabricated by adding FACl to precursor solutions. A champion efficiency of 4.7% was achieved in solar cells based on those films.
The solution-processability of perovskite solar cells (PVSCs) reduces the production cost, but renders a multi-crystalline film with a large number of grain boundaries, which hinders the charge transport and induces defects.
This article provides a comprehensive review of the strategies for passivating defects in wide-bandgap perovskite solar cells.
We demonstrated an effective trap passivation strategy of using oxygen-doped g-C3N4 to simultaneously heal the Sn dangling bonds and –OH traps in SnO2 ETLs for efficient and stable perovskite solar cells.