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dc.contributor.authorZhang, B.
dc.contributor.authorWang, D.
dc.contributor.authorHou, Y.
dc.contributor.authorYang, S.
dc.contributor.authorYang, X.
dc.contributor.authorZhong, J.
dc.contributor.authorLiu, Jian
dc.contributor.authorWang, H.
dc.contributor.authorHu, P.
dc.contributor.authorZhao, H.
dc.contributor.authorYang, H.
dc.identifier.citationZhang, Bo and Wang, Dong and Hou, Yu and Yang, Shuang and Yang, Xiao Hua and Zhong, Ju Hua and Liu, Jian and Wang, Hai Feng and Hu, P. and Zhao, Hui Jun and Yang, Hua Gui. 2013. Facet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells. Scientific Reports. 3 (Article 1836): pp. 1-7.

Platinum (Pt) nanocrystals have demonstrated to be an effective catalyst in many heterogeneous catalytic processes. However, pioneer facets with highest activity have been reported differently for various reaction systems. Although Pt has been the most important counter electrode material for dye-sensitized solar cells (DSCs), suitable atomic arrangement on the exposed crystal facet of Pt for triiodide reduction is still inexplicable. Using density functional theory, we have investigated the catalytic reaction processes of triiodide reduction over {100}, {111} and {411} facets, indicating that the activity follows the order of Pt(111) > Pt(411) > Pt(100). Further, Pt nanocrystals mainly bounded by {100}, {111} and {411} facets were synthesized and used as counter electrode materials for DSCs. The highest photovoltaic conversion efficiency of Pt(111) in DSCs confirms the predictions of the theoretical study. These findings have deepened the understanding of the mechanism of triiodide reduction at Pt surfaces and further screened the best facet for DSCs successfully.

dc.publisherNature Publishing Group
dc.subjectelectron transfer
dc.subjectsolar cells
dc.titleFacet-dependent catalytic activity of platinum nanocrystals for triiodide reduction in dye-sensitized solar cells
dc.typeJournal Article
dcterms.source.titleScientific Reports

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curtin.accessStatusOpen access

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