Plasmonic Enhancement of Dye-Sensitized Solar Cells Using Core鈥揝hell鈥揝hell Nanostructures

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• 作者：Stafford W. Sheehan ; Heeso Noh ; Gary W. Brudvig ; Hui Cao ; Charles A. Schmuttenmaer
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：January 17, 2013
• 年：2013
• 卷：117
• 期：2
• 页码：927-934
• 全文大小：409K
• 年卷期：v.117,no.2(January 17, 2013)
• ISSN：1932-7455

文摘

We report the synthesis of core鈥搒hell鈥搒hell Au@SiO₂@TiO₂ nanostructures and demonstrate near-field plasmonic enhancement of dye-sensitized solar cells (DSSCs) incorporating them. Isolated nanoparticles as well as nanostructured plasmonic aggregates with broadband light absorption throughout the visible light region are developed. Comparisons to theoretical calculations are performed for the nanoparticles to provide further insight into their structure. We show that Au@SiO₂@TiO₂ nanoparticles provide efficiency enhancements greater than that of Au@SiO₂ plasmonic nanoparticles and vary the distance between the molecular chromophore and the gold NP surface to demonstrate that this arises from near-field plasmonic effects. Finally, enhancement of dye absorption in DSSCs using a coupled plasmonic system is shown for the first time and results in a broadband enhancement of quantum efficiency.