Magneto-open-circuit voltage in organic-inorganic halide perovskite solar cells

Organic-inorganic hybrid perovskite solar cells have space charge polarization (SCP) and bulk dipolar polarization (BDP), and it is possible to use external stimuli to tune the photovoltaic response. Here, under the stimulus of an external magnetic field, both SCP and BDP were tuned, to obtain magnetic field dependent open-circuit voltage (V-OC). The application of a magnetic field is an effective way to change SCP, indicating that V-OC performance is sensitive to SCP. When the SCP in perovskite solar cells was decreased, V-OC increased from 1.0 V to 1.1 V, and the power conversion efficiency increased from 17.8% to 19.6%. Published under license by AIP Publishing.