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dc.contributor.authorMacdonald, Thomas J
dc.contributor.authorBatmunkh, Munkhbayar
dc.contributor.authorLin, Chieh-Ting
dc.contributor.authorKim, Jinhyun
dc.contributor.authorTune, Daniel D
dc.contributor.authorAmbroz, Filip
dc.contributor.authorLi, Xiaoe
dc.contributor.authorXu, Shengda
dc.contributor.authorSol, Christian
dc.contributor.authorPapakonstantinou, Ioannis
dc.contributor.authorMcLachlan, Martyn A
dc.contributor.authorParkin, Ivan P
dc.contributor.authorShapter, Joseph G
dc.contributor.authorDurrant, James R
dc.description.abstractCarbon nanotubes are shown to be beneficial additives to perovskite solar cells, and the inclusion of such nanomaterials will continue to play a crucial role in the push toward developing efficient and stable device architectures. Herein, titanium dioxide/carbon nanotube composite perovskite solar cells are fabricated, and device performance parameters are correlated with spectroscopic signatures of the materials to understand the origin of performance enhancement. By probing the charge carrier dynamics with photoluminescence and femtosecond transient absorption spectroscopy, the results indicate that charge transfer is not improved by the presence of the carbon nanotubes. Instead, carbon nanotubes are shown to passivate the electronic defect states within the titanium dioxide, which can lead to stronger radiative recombination in the titanium dioxide/carbon nanotube films. The defect passivation allows the perovskite solar cells made using an optimized titanium dioxide/carbon nanotube composite to achieve a peak power conversion efficiency of 20.4% (19% stabilized), which is one of the highest values reported for perovskite solar cells not incorporating a mixed cation light absorbing layer. The results discuss new fundamental understandings for the role of carbon nanomaterials in perovskite solar cells and present a significant step forward in advancing the field of high‐performance photovoltaics.
dc.relation.ispartofjournalSmall Methods
dc.titleOrigin of Performance Enhancement in TiO2‐Carbon Nanotube Composite Perovskite Solar Cells
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationMacdonald, TJ; Batmunkh, M; Lin, C; Kim, J; Tune, DD; Amboz, F; Li, X; Xu, S; Sol, C; Papakonstantinou, I; McLachlan, MA; Parkin, IP; Shapter, JG; Durrant, JR, Origin of Performance Enhancement in TiO2‐Carbon Nanotube Composite Perovskite Solar Cells, Small Methods, pp. 1900164-1900164
gro.description.notepublicThis publication has been entered into Griffith Research Online as an Advanced Online Version
gro.hasfulltextNo Full Text
gro.griffith.authorBatmunkh, Munkhbayar

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