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.
2D PVSCs with “favorable” ion accumulation are realized via thermal–light post-treatment, which increases the built-in potential and device performance.
The recent advances in the rational design of dopant-free small molecular hole transport materials for high-performance perovskites solar cells is reviewed. The correlation between the molecular structure and device performance is elaborated.
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.