Back to Search
Start Over
Regulating Crystal Orientation via Ligand Anchoring Enables Efficient Wide-Bandgap Perovskite Solar Cells and Tandems.
- Source :
-
Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Jan; Vol. 36 (1), pp. e2307987. Date of Electronic Publication: 2023 Nov 21. - Publication Year :
- 2024
-
Abstract
- Wide-bandgap (WBG) perovskite solar cells have attracted considerable interest for their potential applications in tandem solar cells. However, the predominant obstacles impeding their widespread adoption are substantial open-circuit voltage (V <subscript>OC</subscript> ) deficit and severe photo-induced halide segregation. To tackle these challenges, a crystal orientation regulation strategy by introducing dodecyl-benzene-sulfonic-acid as an additive in perovskite precursors is proposed. This method significantly promotes the desired crystal orientation, passivates defects, and mitigates photo-induced halide phase segregation in perovskite films, leading to substantially reduced nonradiative recombination, minimized V <subscript>OC</subscript> deficits, and enhanced operational stability of the devices. The resulting 1.66 eV bandgap methylamine-free perovskite solar cells achieve a remarkable power conversion efficiency (PCE) of 22.40% (certified at 21.97%), with the smallest V <subscript>OC</subscript> deficit recorded at 0.39 V. Furthermore, the fabricated semitransparent WBG devices exhibit a competitive PCE of 20.13%. Consequently, four-terminal tandem cells comprising WBG perovskite top cells and 1.25 eV bandgap perovskite bottom cells showcase an impressive PCE of 28.06% (stabilized 27.92%), demonstrating great potential for efficient multijunction tandem solar cell applications.<br /> (© 2023 Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-4095
- Volume :
- 36
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Advanced materials (Deerfield Beach, Fla.)
- Publication Type :
- Academic Journal
- Accession number :
- 37956304
- Full Text :
- https://doi.org/10.1002/adma.202307987