Abstract
Perovskite/silicon tandem solar cells have emerged as a highly promising strategy for surpassing the Shockley–Queisser limit. Among these tandem solar cells, the wide-bandgap perovskite plays a key role in highly efficient tandem solar cells. However, the wide bandgap perovskite material suffers from considerable voltage loss due to a high trap density and phase instability under light illumination. In this study, we present a comprehensive set of optimization procedures designed to enhance the power conversion efficiency of methylammonium-free (MA-free) wide-bandgap perovskites. Following this procedure, the opaque MA-free wide-bandgap perovskite solar cells demonstrate an impressive efficiency of 22.11 % with a minimal open-circuit voltage deficit of 0.47 V. Moreover, the efficiency of the semi-transparent wide-bandgap perovskite solar cells reached 19.21 %, and these semi-transparent cells were subsequently integrated into a 4-terminal perovskite/Si tandem solar cell, yielding a remarkable efficiency of 29.98 %. Our study paves a facile way towards highly efficient wide-bandgap perovskite solar cells for the application of semi-transparent and tandem solar cells.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call