Perovskite solar cells;
PbI2;
Fill factor;
ORGANOMETAL HALIDE PEROVSKITES;
PHOTOVOLTAIC DEVICES;
PERFORMANCE;
IODIDE;
PASSIVATION;
CHLORIDE;
LAYERS;
D O I:
10.1246/cl.171214
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
TiO2/CH3NH3PbI3-xClx-based photovoltaic cells with a small amount of excess added PbI2 were fabricated in ambient air. The fill factor and short-circuit current density were increased, which resulted in improvement of the photovoltaic performance. The recombination between a hole and an electron would be suppressed by the PbI2 formation, and the external quantum efficiencies were increased.