Fig. 4: Photovoltaic performances and device stability.
From: Synchronized crystallization in tin-lead perovskite solar cells
a Cross-sectional SEM image of a single-junction Sn-Pb PSC; the scale bar is 1 µm. b J–V curves of the control and target devices, and the corresponding photovoltaic parameters in reverse and forward scan. c External quantum efficiency spectra and integrated JSC of the control and target devices. d Continuous maximum power point tracking of the encapsulated devices.
