首页|High-Performance Perovskite Solar Cells with Zwitterion-Capped-ZnO Quantum Dots as Electron Transport Layer and NH4X(X=F,Cl,Br)Assisted Interfacial Engineering

High-Performance Perovskite Solar Cells with Zwitterion-Capped-ZnO Quantum Dots as Electron Transport Layer and NH4X(X=F,Cl,Br)Assisted Interfacial Engineering

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The systematic advances in the power conversion efficiency(PCE)and stability of perovskite solar cells(PSCs)have been driven by the developments of perovskite materials,electron transport layer(ETL)materials,and interfacial passivation between the relevant layers.While zinc oxide(ZnO)is a promising ETL in thin film photovoltaics,it is still highly desirable to develop novel synthetic methods that allow both fine-tuning the versatility of ZnO nanomaterials and improving the ZnO/perovskite interface.Among various inorganic and organic additives,zwitterions have been effectively utilized to passivate the perovskite films.In this vein,we develop novel,well-characterized betaine-coated ZnO QDs and use them as an ETL in the planar n-i-p PSC architecture,combining the ZnO QDs-based ETL with the ZnO/perovskite interface passivation by a series of ammonium halides(NH4X,where X=F,Cl,Br).The champion device with the NH4F passivation achieves one of the highest performances reported for ZnO-based PSCs,exhibiting a maximum PCE of～22％with a high fill factor of 80.3％and competitive stability,retaining～78％of its initial PCE under 1 Sun illumination with maximum power tracking for 250 h.

interface passivationsperovskitesquantum dotssolar cellszinc oxidezwitterions

Rashmi Runjhun、Essa A.Alharbi、Zygmunt Dru?yński、Anurag Krishna、Ma?gorzata Wolska-Pietkiewicz、Viktor ?korjanc、Thomas P.Baumeler、George Kakavelakis、Felix Eickemeyer、Mounir Mensi、Shaik M.Zakeeruddin、Michael Graetzel、Janusz Lewiński

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Institute of Physical Chemistry Polish Academy of Sciences,Kasprzaka 44/52,01-224 Warsaw,Poland

Laboratory of Photonics and Interfaces,Institute of Chemical Sciences and Engineering,School of Basic Sciences,Ecole Polytechnique Fédérale de Lausanne,CH-1015 Lausanne,Switzerland

Microelectronics and Semiconductors Institute,King Abdulaziz City for Science and Technology(KACST),11442 Riyadh,Saudi Arabia

Faculty of Chemistry,Warsaw University of Technology,Noakowskiego 3,00-664 Warsaw,Poland

Institute of Chemical Sciences and Engineering,École Polytechnique Fédérale de Lausanne,Valais Wallis,CH-1951 Sion,Switzerland

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European Union's Horizon 2020 research and innovation program under the Marie Sk?odowska-CuriePolish Ministry of Science and Higher Education from the cofunded projectKing Abdulaziz City for Science and Technology(KACST),Saudi ArabiaNational Science CentreEuropean Union's Horizon 2020 Research and Innovation program under the Marie Sk?odowska-CurieEuropean Union's Horizon 2020 research and innovation programMarie Sk?odowska-Curie ActionMarie Sk?odowska-Curie Action

7118593549/H2020/COFUND2016/2MAESTRO 11 2019/34/A/ST5/00416843453884444H2020-MSCA-IF-2020101024237

2024

10.1002/eem2.12720

能源与环境材料(英文)

能源与环境材料(英文)

ISSN：
年,卷(期)：2024.7(5)