Photo-ferroelectric perovskite interfaces for boosting V OC in efficient perovskite solar cells.

Autor: Pica G; Department of Chemistry & INSTM, Università Degli Studi Di Pavia, Pavia, Italy., Pancini L; Department of Chemistry & INSTM, Università Degli Studi Di Pavia, Pavia, Italy., Petoukhoff CE; Physical Sciences and Engineering Division (PSE), KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia., Vishal B; Physical Sciences and Engineering Division (PSE), KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia., Toniolo F; Department of Chemistry & INSTM, Università Degli Studi Di Pavia, Pavia, Italy., Ding C; i-Lab & Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), Suzhou, China., Jung YK; Department of Materials, Imperial College London, London, UK.; Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK., Prato M; Istituto Italiano di Tecnologia (IIT), Materials Characterization Facility, Genova, Italy., Mrkyvkova N; Center for Advanced Materials Application, Slovak Academy of Sciences, Bratislava, Slovakia., Siffalovic P; Center for Advanced Materials Application, Slovak Academy of Sciences, Bratislava, Slovakia., De Wolf S; Physical Sciences and Engineering Division (PSE), KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia., Ma CQ; i-Lab & Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), Suzhou, China., Laquai F; Physical Sciences and Engineering Division (PSE), KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia., Walsh A; Department of Materials, Imperial College London, London, UK.; Department of Physics, Ewha Womans University, Seoul, Korea., Grancini G; Department of Chemistry & INSTM, Università Degli Studi Di Pavia, Pavia, Italy. giulia.grancini@unipv.it.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Oct 09; Vol. 15 (1), pp. 8753. Date of Electronic Publication: 2024 Oct 09.
DOI: 10.1038/s41467-024-53121-8
Abstrakt: Interface engineering is the core of device optimization, and this is particularly true for perovskite photovoltaics (PVs). The steady improvement in their performance has been largely driven by careful manipulation of interface chemistry to reduce unwanted recombination. Despite that, PVs devices still suffer from unavoidable open circuit voltage (V OC ) losses. Here, we propose a different approach by creating a photo-ferroelectric perovskite interface. By engineering an ultrathin ferroelectric two-dimensional perovskite (2D) which sandwiches a perovskite bulk, we exploit the electric field generated by external polarization in the 2D layer to enhance charge separation and minimize interfacial recombination. As a result, we observe a net gain in the device V OC reaching 1.21 V, the highest value reported to date for highly efficient perovskite PVs, leading to a champion efficiency of 24%. Modeling depicts a coherent matching of the crystal and electronic structure at the interface, robust to defect states and molecular reorientation. The interface physics is finely tuned by the photoferroelectric field, representing a new tool for advanced perovskite device design.
(© 2024. The Author(s).)
Databáze: MEDLINE
Externí odkaz: