Show simple item record

dc.contributor.authorAlsalloum, Abdullah Yousef
dc.contributor.authorTuredi, Bekir
dc.contributor.authorAlmasabi, Khulud M.
dc.contributor.authorZheng, Xiaopeng
dc.contributor.authorNaphade, Rounak
dc.contributor.authorStranks, Samuel D.
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorBakr, Osman
dc.identifier.citationAlsalloum, A. Y., Turedi, B., Almasabi, K., Zheng, X., Naphade, R., Stranks, S. D., … Bakr, O. M. (2021). 22.8%-Efficient single-crystal mixed-cation inverted perovskite solar cells with a near-optimal bandgap. Energy & Environmental Science, 14(4), 2263–2268. doi:10.1039/d0ee03839c
dc.description.abstractExpanding the near-infrared (NIR) response of perovskite materials to approach the ideal bandgap range (1.1-1.4 eV) for single-junction solar cells is an attractive step to unleash the full potential of perovskite solar cells (PSCs). However, polycrystalline formamidinium lead triiodide (FAPbI3)-based absorbers, used in record-efficiency PSCs, currently offer the smallest bandgap that can be achieved for lead-halide perovskite thin films (>100 meV larger than the optimal bandgap). Here, we uncover that utilizing a mixed-cation single-crystal absorber layer (FA0.6MA0.4PbI3) is capable of redshifting the external quantum efficiency (EQE) band edge past that of FAPbI3 polycrystalline solar cells by about 50 meV-only 60 meV larger than that of the top-performing photovoltaic material, GaAs-leading to EQE-verified short-circuit current densities exceeding 26 mA cm-2 without sacrificing the open-circuit voltage (VOC), and therefore, yielding power conversion efficiencies of up to 22.8%. These figures of merit not only set a new record for SC-PSCs and are among the highest reported for inverted-structured-PSCs, but also offer an avenue for lead halide PSCs to advance their performance toward their theoretical Shockley-Queisser Limit potential. This journal is
dc.description.sponsorshipWe acknowledge the use of KAUST Core Lab and KAUST Solar Center facilities. S.D.S acknowledges the Royal Society and Tata Group (UF150033).
dc.publisherRoyal Society of Chemistry (RSC)
dc.rightsThis article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
dc.title22.8%-Efficient single-crystal mixed-cation inverted perovskite solar cells with a near-optimal bandgap
dc.contributor.departmentChemical Science Program
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentUltrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
dc.identifier.journalEnergy & Environmental Science
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionCavendish Laboratory, University of Cambridge, JJ Thomson Avenue Cambridge CB3 0HE UK
dc.contributor.institutionDepartment of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive Cambridge CB3 0AS UK
kaust.personAlsalloum, Abdullah
kaust.personTuredi, Bekir
kaust.personAlmasabi, Khulud
kaust.personZheng, Xiaopeng
kaust.personNaphade, Rounak
kaust.personMohammed, Omar F.
kaust.personBakr, Osman M.
kaust.acknowledged.supportUnitKAUST Core Lab
kaust.acknowledged.supportUnitKAUST Solar Center

Files in this item

Published version

This item appears in the following Collection(s)

Show simple item record

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Except where otherwise noted, this item's license is described as This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.