Efficient, stable silicon tandem cells enabled by anion-engineered wide-bandgap perovskites.
Science
; 368(6487): 155-160, 2020 04 10.
Article
en En
| MEDLINE
| ID: mdl-32217753
ABSTRACT
Maximizing the power conversion efficiency (PCE) of perovskite/silicon tandem solar cells that can exceed the Shockley-Queisser single-cell limit requires a high-performing, stable perovskite top cell with a wide bandgap. We developed a stable perovskite solar cell with a bandgap of ~1.7 electron volts that retained more than 80% of its initial PCE of 20.7% after 1000 hours of continuous illumination. Anion engineering of phenethylammonium-based two-dimensional (2D) additives was critical for controlling the structural and electrical properties of the 2D passivation layers based on a lead iodide framework. The high PCE of 26.7% of a monolithic two-terminal wide-bandgap perovskite/silicon tandem solar cell was made possible by the ideal combination of spectral responses of the top and bottom cells.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Science
Año:
2020
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Article