Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.Advertisement Nature (2022)Cite this article 87 AltmetricMetrics details We are providing an unedited version of this manuscript to give early access to its findings. Before final publication, the manuscript will undergo further editing. Please note there may be errors present which affect the content, and all legal disclaimers apply. The open circuit voltage (V) deficit in perovskite solar cells (PSCs) is greater in wide bandgap (>1.7 eV) cells than in ~1.5 eV perovskites. Quasi-Fermi level splitting (QFLS) measurements reveal V-limiting recombination at the electron transport layer (ETL) contact. This, we find, stems from inhomogeneous surface potential and poor perovskite-ETL energetic alignment. Common monoammonium surface treatments fail to address this; instead we introduce diammonium molecules to modify the perovskite surface states and achieve a more uniform spatial distribution of surface potential. Using 1,3-propane diammonium (PDA), QFLS increases by 90 meV, enabling 1.79 eV PSCs with a certified 1.33 V V, and > 19% power conversion efficiency (PCE). Incorporating this layer into a monolithic all-perovskite tandem, we report a record V of 2.19 V (89% of the detailed balance V limit) and > 27% PCE (26.3% certified quasi-steady-state). These tandems retain more than 86% of their initial PCE after 500 hrs operation.This is a preview of subscription content, access via your institution
Subscribe to JournalGet full journal access for 1 year199,00 €only 3,90 € per issueTax calculation will be finalised during checkout.Buy articleGet time limited or full article access on ReadCube.$32.00All prices are NET prices.These authors contributed equally: Hao Chen, Aidan Maxwell, Chongwen Li, Sam Teale, Bin ChenThe Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, CanadaHao Chen, Aidan Maxwell, Chongwen Li, Sam Teale, Bin Chen, Tong Zhu, Luke Grater, Junke Wang, Zaiwei Wang, Lewei Zeng, So Min Park & Edward H. SargentDepartment of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, Ohio, USAChongwen Li, Lei Chen, Rasha Abbas Awni, Biwas Subedi, Nikolas J. Podraza & Yanfa YanDepartment of Chemistry, Northwestern University, Evanston, Illinois, USABin Chen, Cheng Liu, Yi Yang, Mercouri G. Kanatzidis & Edward H. SargentKAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi ArabiaEsma Ugur, George Harrison, Tobin Filleter & Stefaan De WolfDepartment of Mechanical and Industrial Engineering, University of Toronto, 5 King’s College Road, Toronto, Ontario, CanadaPeter SerlesNational Renewable Energy Laboratory, Golden, Colorado, USAXiaopeng Zheng, Chuanxiao Xiao & Joseph M. LutherDepartment of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois, USACheng Liu, Yi Yang & Edward H. SargentYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarYou can also search for this author in PubMed Google ScholarCorrespondence to Yanfa Yan or Edward H. Sargent.This file contains Supplementary Figs. 1–24, Supplementary Tables 1–4, Supplementary Notes 1 and 2 and Supplementary References.Reprints and PermissionsChen, H., Maxwell, A., Li, C. et al. Regulating surface potential maximizes voltage in all-perovskite tandems. Nature (2022). https://doi.org/10.1038/s41586-022-05541-zDownload citationReceived: Accepted: Published: : https://doi.org/10.1038/s41586-022-05541-zAnyone you share the following link with will be able to read this content:Sorry, a shareable link is not currently available for this article.
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