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dc.contributor.authorZheng, Xiaopeng
dc.contributor.authorHou, Yi
dc.contributor.authorBao, Chunxiong
dc.contributor.authorYin, Jun
dc.contributor.authorYuan, Fanglong
dc.contributor.authorHuang, Ziru
dc.contributor.authorSong, Kepeng
dc.contributor.authorLiu, Jiakai
dc.contributor.authorTroughton, Joel
dc.contributor.authorGasparini, Nicola
dc.contributor.authorZhou, Chun
dc.contributor.authorLin, Yuanbao
dc.contributor.authorXue, Ding-Jiang
dc.contributor.authorChen, Bin
dc.contributor.authorJohnston, Andrew K.
dc.contributor.authorWei, Nini
dc.contributor.authorHedhili, Mohamed N.
dc.contributor.authorWei, Mingyang
dc.contributor.authorAlsalloum, Abdullah Yousef
dc.contributor.authorMaity, Partha
dc.contributor.authorTuredi, Bekir
dc.contributor.authorYang, Chen
dc.contributor.authorBaran, Derya
dc.contributor.authorAnthopoulos, Thomas D.
dc.contributor.authorHan, Yu
dc.contributor.authorLu, Zheng-Hong
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorGao, Feng
dc.contributor.authorSargent, E.
dc.contributor.authorBakr, Osman
dc.date.accessioned2020-01-21T06:11:42Z
dc.date.available2020-01-21T06:11:42Z
dc.date.issued2020-01-20
dc.identifier.citationZheng, X., Hou, Y., Bao, C., Yin, J., Yuan, F., Huang, Z., … Bakr, O. M. (2020). Managing grains and interfaces via ligand anchoring enables 22.3%-efficiency inverted perovskite solar cells. Nature Energy. doi:10.1038/s41560-019-0538-4
dc.identifier.doi10.1038/s41560-019-0538-4
dc.identifier.urihttp://hdl.handle.net/10754/661110
dc.description.abstractInverted perovskite solar cells have attracted increasing attention because they have achieved long operating lifetimes. However, they have exhibited significantly inferior power conversion efficiencies compared to regular perovskite solar cells. Here we reduce this efficiency gap using a trace amount of surface-anchoring alkylamine ligands (AALs) with different chain lengths as grain and interface modifiers. We show that long-chain AALs added to the precursor solution suppress nonradiative carrier recombination and improve the optoelectronic properties of mixed-cation mixed-halide perovskite films. The resulting AALs surface-modified films exhibit a prominent (100) orientation and lower trap-state density as well as enhanced carrier mobilities and diffusion lengths. These translate into a certified stabilized power conversion efficiency of 22.3% (23.0% power conversion efficiency for lab-measured champion devices). The devices operate for over 1,000h at the maximum power point under simulated AM1.5 illumination, without loss of efficiency.
dc.description.sponsorshipWe acknowledge the use of KAUST Core Lab and KAUST Solar Center facilities. This work was supported by KAUST and the Office of Sponsored Research (OSR) under award no. OSR-2017-CRG-3380. F.G. is a Wallenberg Academy Fellow.
dc.publisherSpringer Nature
dc.relation.urlhttp://www.nature.com/articles/s41560-019-0538-4
dc.rightsArchived with thanks to Nature Energy
dc.titleManaging grains and interfaces via ligand anchoring enables 22.3%-efficiency inverted perovskite solar cells
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Science Program
dc.contributor.departmentElectron Microscopy
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.departmentNanostructured Functional Materials (NFM) laboratory
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSurface Science
dc.contributor.departmentUltrafast Laser Spectroscopy and Four-dimensional Electron Imaging Research Group
dc.identifier.journalNature Energy
dc.rights.embargodate2020-07-20
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada.
dc.contributor.institutionDepartment of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden.
dc.contributor.institutionDepartment of Materials Science and Engineering, University of Toronto, Toronto, Ontario, Canada.
kaust.personZheng, Xiaopeng
kaust.personYin, Jun
kaust.personSong, Kepeng
kaust.personLiu, Jiakai
kaust.personTroughton, Joel
kaust.personGasparini, Nicola
kaust.personLin, Yuanbao
kaust.personWei, Nini
kaust.personHedhili, Mohamed N.
kaust.personAlsalloum, Abdullah
kaust.personMaity, Partha
kaust.personTuredi, Bekir
kaust.personYang, Chen
kaust.personBaran, Derya
kaust.personAnthopoulos, Thomas D.
kaust.personHan, Yu
kaust.personMohammed, Omar F.
kaust.personBakr, Osman M.
kaust.grant.numberOSR-2017-CRG-3380
refterms.dateFOA2020-07-20T00:00:00Z
kaust.acknowledged.supportUnitKAUST Core Lab
kaust.acknowledged.supportUnitKAUST Solar Center
kaust.acknowledged.supportUnitOffice of Sponsored Research (OSR)
dc.date.published-online2020-01-20
dc.date.published-print2020-02


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