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

Research output: Contribution to journalArticle

84 Citations (Scopus)

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 languageEnglish
Pages (from-to)9537-9540
Number of pages4
JournalJournal of the American Chemical Society
Volume134
Issue number23
DOIs
Publication statusPublished - Jun 13 2012

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Harvesters
Silicon Dioxide
Glass
Coloring Agents
Silica
Light
Electrolytes
Deposits
Dyes
Nanoparticles
Coatings
Genetic Recombination
Molecules
Dye-sensitized solar cells

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Glass-encapsulated light harvesters : More efficient dye-sensitized solar cells by deposition of self-aligned, conformal, and self-limited silica layers. / Son, Ho Jin; Wang, Xinwei; Prasittichai, Chaiya; Jeong, Nak Cheon; Aaltonen, Titta; Gordon, Roy G.; Hupp, Joseph T.

In: Journal of the American Chemical Society, Vol. 134, No. 23, 13.06.2012, p. 9537-9540.

Research output: Contribution to journalArticle

Son, Ho Jin ; Wang, Xinwei ; Prasittichai, Chaiya ; Jeong, Nak Cheon ; Aaltonen, Titta ; Gordon, Roy G. ; Hupp, Joseph T. / Glass-encapsulated light harvesters : More efficient dye-sensitized solar cells by deposition of self-aligned, conformal, and self-limited silica layers. In: Journal of the American Chemical Society. 2012 ; Vol. 134, No. 23. pp. 9537-9540.
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