Hybrid templated synthesis of crack-free, organized mesoporous TiO 2 electrodes for high efficiency solid-state dye-sensitized solar cells

Jung Tae Park, Won Seok Chi, Dong Kyu Roh, Sung Hoon Ahn, Jong Hak Kim

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

Organic/inorganic hybrid templates, i.e., aluminium oxide (Al 2O3) nanoparticles grafted with poly(oxyethylene) methacrylate, Al2O3-POEM, are synthesized via surface-initiated atom transfer radical polymerization (ATRP), as confirmed by Fourier transform-infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). Upon combining the Al2O3-POEM with titanium(IV) isopropoxide (TTIP), hydrophilic TTIP is selectively confined in the hydrophilic POEM chains through hydrogen bonding interactions. Following the calcination at 450 °C and the selective etching of Al2O3 with NaOH, the OM-TiO2 films with high surface areas, good interconnectivity, and anatase phase are obtained. The solid-state dye-sensitized solar cells (ssDSSCs) fabricated with OM-TiO2 photoelectrodes and a polymerized ionic liquid (PIL) show a high energy conversion efficiency of 7.3% at 100 mW cm-2, which is one of the highest values for ssDSSCs. The high cell performance is due to the well-organized structure, resulting in improved dye loading, excellent pore filling of electrolyte, enhanced light harvesting, and reduced charge recombination.

Original languageEnglish
Pages (from-to)26-33
Number of pages8
JournalAdvanced Functional Materials
Volume23
Issue number1
DOIs
Publication statusPublished - 2013 Jan 7

Fingerprint

cracks
Titanium
solar cells
dyes
Cracks
solid state
Ionic Liquids
Electrodes
electrodes
Methacrylates
Aluminum Oxide
Atom transfer radical polymerization
synthesis
titanium
Energy conversion
Ionic liquids
Calcination
Titanium dioxide
Electrolytes
Conversion efficiency

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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title = "Hybrid templated synthesis of crack-free, organized mesoporous TiO 2 electrodes for high efficiency solid-state dye-sensitized solar cells",
abstract = "Organic/inorganic hybrid templates, i.e., aluminium oxide (Al 2O3) nanoparticles grafted with poly(oxyethylene) methacrylate, Al2O3-POEM, are synthesized via surface-initiated atom transfer radical polymerization (ATRP), as confirmed by Fourier transform-infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA). Upon combining the Al2O3-POEM with titanium(IV) isopropoxide (TTIP), hydrophilic TTIP is selectively confined in the hydrophilic POEM chains through hydrogen bonding interactions. Following the calcination at 450 °C and the selective etching of Al2O3 with NaOH, the OM-TiO2 films with high surface areas, good interconnectivity, and anatase phase are obtained. The solid-state dye-sensitized solar cells (ssDSSCs) fabricated with OM-TiO2 photoelectrodes and a polymerized ionic liquid (PIL) show a high energy conversion efficiency of 7.3{\%} at 100 mW cm-2, which is one of the highest values for ssDSSCs. The high cell performance is due to the well-organized structure, resulting in improved dye loading, excellent pore filling of electrolyte, enhanced light harvesting, and reduced charge recombination.",
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Hybrid templated synthesis of crack-free, organized mesoporous TiO 2 electrodes for high efficiency solid-state dye-sensitized solar cells. / Park, Jung Tae; Chi, Won Seok; Roh, Dong Kyu; Ahn, Sung Hoon; Kim, Jong Hak.

In: Advanced Functional Materials, Vol. 23, No. 1, 07.01.2013, p. 26-33.

Research output: Contribution to journalArticle

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AU - Park, Jung Tae

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AU - Kim, Jong Hak

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