Impedance spectroscopy (IS) is an effective characterization technique used to probe and
distinguish charge dynamics occurring at different timescales in optoelectronic and electric …

The extensive research and development in perovskite solar cells (PSCs) have rekindled
the hopes of converting solar energy into electricity. An elusive understanding of underlying …

Understanding and controlling crystallization is crucial for high‐quality perovskite films and
efficient solar cells. Herein, the issue of defects in formamidinium lead iodide (FAPbI3) …

Metal halide perovskite (MHP) devices often show different types of hysteresis in separate
voltage domains. At low voltage, the impedance response is capacitive, and the cell gives …

Mixed tin–lead perovskites suffer from several degradation pathways that hinder their
effective implementation in tandem photovoltaic technologies. The main challenge involves …

Nanomaterials such as quantum dots and 2D materials have been widely used to improve
the performance of perovskite solar cells due to their favorable optical properties …

For the first time, we increased the power conversion efficiency (PCE) of a perovskite solar
cell (PSC) from 13.82% to 19.45%, by presenting a new structure of hole transport layer …

Both the uncoordinated Pb2+ and excess PbI2 in perovskite film will create defects and
perturb carrier collection, thus leading to the open‐circuit voltage (VOC) loss and inducing …

Despite having long excited carrier lifetimes and high mobilities in hybrid halide perovskite
materials, conventional (nip) devices exhibit significant interfacial nonradiative …

Dynamic hysteresis effects have been long known to occur in the current density-voltage
characteristics of perovskite solar cells, with the ionic migration being identified as the …