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Sodium Diffuses from Glass Substrates through P1 Lines and Passivates Defects in Perovskite Solar Modules

Energy & Environmental Materials 2023年第6期6卷 393-401页

作者： felix utama kosasih Francesco Di Giacomo Jordi Ferrer Orri Kexue Li Elizabeth M.Tennyson Weiwei Li Fabio Matteocci Gunnar Kusch Narges Yaghoobi Nia Rachel A.Oliver Judith L.MacManus-Driscoll Katie L.Moore Samuel D.Stranks Aldo Di Carlo Giorgio Divitini Caterina Ducati Department of Materials Science and Metallurgy University of Cambridge27 Charles Babbage RoadCambridge CB30FSUK Centre for Hybrid and Organic Solar Energy(CHOSE) Department of Electronic EngineeringUniversity of Rome Tor VergataRome 00133Italy Cavendish Laboratory University of CambridgeJJ Thomson AvenueCambridge CB30HEUK Department of Materials and Photon Science Institute University of ManchesterOxford RoadManchester M139PLUK Department of Chemical Engineering and Biotechnology University of CambridgePhilippa Fawcett DriveCambridge CB30ASUK Laboratory for Advanced Solar Energy(LASE) National University of Science and Technology MISiSLeninskiy Prospekt 4Moscow 119049Russia Energy Research Institute@NTU Nanyang Technological University50 Nanyang DriveSingapore 637553Singapore MIIT Key Laboratory of Aerospace Information Materials and Physics College of PhysicsNanjing University of Aeronautics and AstronauticsNanjing 211106China Istituto di Struttura della Materia-CNR(ISM-CNR) Via del Fosso del Cavaliere 100Rome 00133Italy Electron Spectroscopy and Nanoscopy Istituto Italiano di TecnologiaVia Morego 30Genova 16163Italy

Most thin-film photovoltaic modules are constructed on soda-lime glass(SLG)substrates containing alkali oxides,such as Na_(2)*** may diffuse from SLG into a module's active layers through P1 lines,an area between a module's constituent cells where the substrate-side charge transport layer(CTL)is in direct contact with *** diffusion from SLG is known to cause several important effects inⅡ-Ⅵand chalcogenide solar modules,but it has not been studied in perovskite solar modules(PSMs).In this work,we use complementary microscopy and spectroscopy techniques to show that Na diffusion occurs in the fabrication process of *** diffuses vertically inside P1 lines and then laterally from P1 lines into the active area for up to 360 *** propose that this process is driven by the high temperatures the devices are exposed to during CTL and perovskite *** diffused Na preferentially binds with Br,forming Br-poor,l-rich perovskite and a species rich in Na and Br(Na-Br)close to P1 ***-Br passivates defect sites,reducing non-radiative recombination in the perovskite and boosting its luminescence by up to 5×.Na-Br is observed to be stable after 12 weeks of device storage,suggesting long-lasting effects of Na *** results not only point to a potential avenue to increase PSM performance but also highlight the possibility of unabated Na diffusion throughout a module's lifetime,especially if accelerated by the electric field and elevated temperatures achievable during device operation.

关键词： defect passivation monolithic interconnection perovskite solar modules soda-lime glass sodium diffusion solar cells thin-film photovoltaics

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