Glass-encapsulated light harvesters: More efficient dye-sensitized solar cells by deposition of self-aligned, conformal, and self-limited silica layers

Ho Jin Son; Xinwei Wang; Chaiya Prasittichai; Nak Cheon Jeong; Titta Aaltonen; Roy G. Gordon; Joseph T. Hupp

doi:10.1021/ja300015n

Glass-encapsulated light harvesters: More efficient dye-sensitized solar cells by deposition of self-aligned, conformal, and self-limited silica layers

Ho Jin Son, Xinwei Wang, Chaiya Prasittichai, Nak Cheon Jeong, Titta Aaltonen, Roy G. Gordon^*, Joseph T. Hupp

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

101 Scopus citations

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.

Original language	English (US)
Pages (from-to)	9537-9540
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	134
Issue number	23
DOIs	https://doi.org/10.1021/ja300015n
State	Published - Jun 13 2012

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

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10.1021/ja300015n

Cite this

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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",

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.",

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T2 - More efficient dye-sensitized solar cells by deposition of self-aligned, conformal, and self-limited silica layers

AU - Son, Ho Jin

AU - Wang, Xinwei

AU - Prasittichai, Chaiya

AU - Jeong, Nak Cheon

AU - Aaltonen, Titta

AU - Gordon, Roy G.

AU - Hupp, Joseph T.

PY - 2012/6/13

Y1 - 2012/6/13

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AB - 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.

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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

Abstract

ASJC Scopus subject areas

UN SDGs

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