Glass-Encapsulated Light Harvesters: More Efficient Dye-Sensitized Solar Cells by Deposition of Self-Aligned, Conformal, and Self-Limited Silica Layers

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Glass-Encapsulated Light Harvesters: More Efficient Dye-Sensitized Solar Cells by Deposition of Self-Aligned, Conformal, and Self-Limited Silica Layers

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Title: Glass-Encapsulated Light Harvesters: More Efficient Dye-Sensitized Solar Cells by Deposition of Self-Aligned, Conformal, and Self-Limited Silica Layers
Author: Son, Ho-Jin; Wang, Xinwei; Prasittichai, Chaiya; Jeong, Nak Cheon; Aaltonen, Titta; Gordon, Roy Gerald; Hupp, Joseph T.

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Citation: Son, Ho-Jin, Xinwei Wang, Chaiya Prasittichai, Nak Cheon Jeong, Titta Aaltonen, Roy Gerald Gordon, and Joseph T. Hupp. 2012. Glass-encapsulated light harvesters: More efficient dye-sensitized solar cells by deposition of self-aligned, conformal, and self-limited silica layers. Journal of the American Chemical Society 134(23): 9537–9540.
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Abstract: A major loss mechanism in dye-sensitized solar cells (DSCs) is recombination at the \(TiO_2\)/electrolyte interface. Here we report a method to reduce greatly this loss mechanism. We deposit insulating and transparent silica \((SiO_2)\) onto the open areas of a nanoparticulate \(TiO_2\) surface while avoiding any deposition of \(SiO_2\) over or under the organic dye molecules. The \(SiO_2\) coating covers the highly convoluted surface of the \(TiO_2\) conformally and with a uniform thickness throughout the thousands of layers of nanoparticles. DSCs incorporating these selective and self-aligned \(SiO_2\) layers achieved a 36% increase in relative efficiency versus control uncoated cells.
Published Version: doi:10.1021/ja300015n
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:10139291
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