A comprehensive optimization of highly efficient MA-Free wide-bandgap perovskites for 4-T Perovskite/Silicon tandem solar cells
Journal
Chemical Engineering Journal
Journal Volume
503
Start Page
158272
ISSN
1385-8947
Date Issued
2025-01-01
Author(s)
DOI
10.1016/j.cej.2024.158272
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.
Subjects
Lattice strain-induced phase segregation
MA-free
Perovskite
Tandem
Wide-bandgap
SDGs
Publisher
Elsevier BV
Type
journal article