Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/85190
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dc.contributor.authorLim, Swee Sienen
dc.contributor.authorFilonik, Oliveren
dc.contributor.authorHerzig, Eva M.en
dc.contributor.authorMüller-Buschbaum, Peteren
dc.contributor.authorSwamy, Vargheseen
dc.contributor.authorChien, Sum Tzeen
dc.contributor.authorMhaisalkar, Subodh G.en
dc.contributor.authorMathews, Nripanen
dc.contributor.authorKoh, Teck Mingen
dc.contributor.authorShanmugam, Vigneshen
dc.contributor.authorGuo, Xintongen
dc.date.accessioned2019-10-29T06:42:56Zen
dc.date.accessioned2019-12-06T15:59:06Z-
dc.date.available2019-10-29T06:42:56Zen
dc.date.available2019-12-06T15:59:06Z-
dc.date.issued2018en
dc.identifier.citationKoh, T. M., Shanmugam, V., Guo, X., Lim, S. S., Filonik, O., Herzig, E. M., … Mathews, N. (2018). Enhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaics. Journal of Materials Chemistry A, 6(5), 2122-2128. doi:10.1039/C7TA09657Gen
dc.identifier.issn2050-7488en
dc.identifier.urihttps://hdl.handle.net/10356/85190-
dc.description.abstractSurface imperfections in perovskite films upon crystallization may trigger trap-assisted non-radiative recombination which is a dominant recombination mechanism that potentially restricts the performance of solar devices. In this work, 2D alkylammonium halide perovskites are formed on the 3D perovskite structure to passivate interfacial defects and vacancies and enhance moisture tolerance. The hybrid 3D/2D perovskite films possess longer photoluminescence lifetimes, as well as lower trap state densities, indicating the passivation of cationic and halide vacancies on the surface or grain boundaries, thereby reducing the non-radiative recombination pathways. More importantly, the hybrid 3D/2D perovskite exhibits higher ambient stability than a pure 3D perovskite where the hydrophobic nature of the long aliphatic carbon chains in the 2D perovskite provide an additional moisture repelling effect to the entire perovskite film. With this approach, the power conversion efficiency of perovskite solar cells was improved from 14.17% to 15.74% along with improved device stability. The hybrid 3D/2D perovskite solar cell retained 86% of its initial power conversion efficiency whereas the control device lost almost 40% of its overall efficiency. Thus, the hybrid 3D/2D perovskite structure is an alternative solution for modulating defects and trap-state densities in high efficiency perovskite solar cells with simultaneously enhanced moisture stability.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.format.extent7 p.en
dc.language.isoenen
dc.relation.ispartofseriesJournal of Materials Chemistry Aen
dc.rights© 2018 The Author(s). All rights reserved. This paper was published by Royal Society of Chemistry in Journal of Materials Chemistry A and is made available with permission of The Author(s).en
dc.subjectPerovskitesen
dc.subjectPhotovoltaicsen
dc.subjectScience::Physicsen
dc.titleEnhancing moisture tolerance in efficient hybrid 3D/2D perovskite photovoltaicsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science & Engineeringen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en
dc.contributor.researchEnergy Research Institute @ NTU (ERI@N)en
dc.identifier.doi10.1039/C7TA09657Gen
dc.description.versionAccepted versionen
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item.grantfulltextopen-
Appears in Collections:ERI@N Journal Articles
IGS Journal Articles
MSE Journal Articles
SPMS Journal Articles
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