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dc.contributor.authorFoo, Shinien_US
dc.contributor.authorThambidurai, Mariyappanen_US
dc.contributor.authorHarikesh, Padinhare Cholakkalen_US
dc.contributor.authorMathews, Nripanen_US
dc.contributor.authorHuang, Yizhongen_US
dc.contributor.authorDang, Cuongen_US
dc.identifier.citationFoo, S., Thambidurai, M., Harikesh, P. C., Mathews, N., Huang, Y. & Dang, C. (2020). Interfacial 2-hydrozybenzophenone passivation for highly efficient and stable perovskite solar cells. Journal of Power Sources, 475, 228665-.
dc.description.abstractDefects found on the surfaces of organic-inorganic perovskite films are detrimental to the device efficiency, reproducibility and stability. Herein, 2-hydrozybenzophenone (HBP) is introduced to the perovskite/spiro-OMeTAD interface in which the optimized device shows superior power conversion efficiency of 19.28% and long-term stability in which 93% of initial efficiency is retained, despite having been stored for 120 days. Improvements are attributed to the reduction in surface defects and strengthened charge transport properties, which are supported by the enhanced open-circuit voltage and fill factor, respectively. Acting as a Lewis base molecule, effective interactions between HBP and under-coordinated lead ions passivate the surface defects found on the perovskite film, allowing increase in both device efficiency and durability. The increased hydrophobicity further improves the stability of the device. Hence, this work provides a facile yet highly effective approach for achieving high efficiency, reproducibility and stability in planar perovskite solar devices.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.relationMOE2019-T1-002- 087en_US
dc.relation.ispartofJournal of Power Sourcesen_US
dc.rights© 2020 Elsevier B.V. All rights reserved.en_US
dc.titleInterfacial 2-hydrozybenzophenone passivation for highly efficient and stable perovskite solar cellsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.contributor.researchEnergy Research Institute @ NTU (ERI@N)en_US
dc.contributor.researchResearch Techno Plazaen_US
dc.contributor.researchThe Photonics Instituteen_US
dc.contributor.researchCentre for OptoElectronics and Biophotonics (OPTIMUS)en_US
dc.subject.keywordsPlanar Perovskite Solar Cellen_US
dc.description.acknowledgementThe research is supported by AcRF Tier1 grant (MOE2019-T1-002- 087) from Singapore Ministry of Education.en_US
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