Fig. 6: Design and photovoltaic performance of mechanically stacked tandem solar cells.
From: Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems
a Device structures of perovskite top cell, CQD, and SHJ bottom cell. b EQE spectra (overlaid with AM1.5 G) and c JV curves of perovskite top cell, CQD:organic hybrid bottom cell and SHJ bottom cell in the 4T tandem configuration. d PCE progress of perovskite-based tandem solar cells.
