Abstract
Hybrid organic-inorganic perovskite-based solar cells have recently attained conversion efficiency exceeding 20% showing great promise for a new large scale cost-competitive photovoltaic technology. Despite the rising literature on the photovoltaic use of perovskite based solar cells, many questions, concerning their structural chemistry and electrical response to light induced processes, are not yet totally understood. In this context, frequency domain techniques are very useful for systematic characterization of these devices. Transient photovoltage decay and impedance spectroscopy techniques allow to decoupled physical processes with different characteristic times at the cell working conditions, and identify the different processes responsible of the final performance in order to focus the optimization and design of efficient perovskite solar cells.
