Dual-Interface Engineering in Perovskite Solar Cells with 2D Carbides.
Angew Chem Int Ed Engl
; 62(41): e202311865, 2023 Oct 09.
Article
en En
| MEDLINE
| ID: mdl-37615050
ABSTRACT
Passivating the interfaces between the perovskite and charge transport layers is crucial for enhancing the power conversion efficiency (PCE) and stability in perovskite solar cells (PSCs). Here we report a dual-interface engineering approach to improving the performance of FA0.85 MA0.15 Pb(I0.95 Br0.05 )3 -based PSCs by incorporating Ti3 C2 Clx Nano-MXene and o-TB-GDY nanographdiyne (NanoGDY) into the electron transport layer (ETL)/perovskite and perovskite/ hole transport layer (HTL) interfaces, respectively. The dual-interface passivation simultaneously suppresses non-radiative recombination and promotes carrier extraction by forming the Pb-Cl chemical bond and strong coordination of π-electron conjugation with undercoordinated Pb defects. The resulting perovskite film has an ultralong carrier lifetime exceeding 10â
µs and an enlarged crystal size exceeding 2.5â
µm. A maximum PCE of 24.86 % is realized, with an open-circuit voltage of 1.20â
V. Unencapsulated cells retain 92 % of their initial efficiency after 1464â
hours in ambient air and 80 % after 1002â
hours of thermal stability test at 85 °C.
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MEDLINE
Idioma:
En
Revista:
Angew Chem Int Ed Engl
Año:
2023
Tipo del documento:
Article
País de afiliación:
China