Triazoloisoquinoline-based/ruthenium-hybrid sensitizer for efficient dye-sensitized solar cells

Che Lung Lee, Wen-Shi Lee, Cheng Hsien Yang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Triazoloisoquinoline-based organic dyestuffs were synthesized and used in the fabrication of dye-sensitized solar cells (DSSCs). After cosensitization with ruthenium complex, the triazoloisoquinoline-based organic dyestuffs overcame the deficiency of ruthenium dyestuff absorption in the blue part of the visible spectrum. This method also fills the blanks of ruthenium dyestuff sensitized TiO2 film and forms a compact insulating molecular layer due to the nature of small molecular organic dyestuffs. The incident photon-to-electron conversion efficiency of N719 at shorter wavelength regions is 49%. After addition of a triazoloisoquinoline-based dyestuff for co-sensitization, the IPCE at 350-500 nm increased significantly. This can be attributed to the increased photocurrent of the cells, which improves the dye-sensitized photoelectric conversion efficiency from 6.23% to 7.84%, and the overall conversion efficiency increased by about 26%. As a consequence, this low molecular weight organic dyestuff is a promising candidate as coadsorbent and cosensitizer for highly efficient dye-sensitized solar cells.

Original languageEnglish
Article number984516
JournalInternational Journal of Photoenergy
Volume2013
DOIs
Publication statusPublished - 2013 Dec 16

Fingerprint

Ruthenium
ruthenium
Conversion efficiency
solar cells
dyes
blanks
low molecular weights
visible spectrum
Photocurrents
photocurrents
Coloring Agents
Photons
Dyes
Molecular weight
Fabrication
Wavelength
fabrication
Electrons
photons
cells

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

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title = "Triazoloisoquinoline-based/ruthenium-hybrid sensitizer for efficient dye-sensitized solar cells",
abstract = "Triazoloisoquinoline-based organic dyestuffs were synthesized and used in the fabrication of dye-sensitized solar cells (DSSCs). After cosensitization with ruthenium complex, the triazoloisoquinoline-based organic dyestuffs overcame the deficiency of ruthenium dyestuff absorption in the blue part of the visible spectrum. This method also fills the blanks of ruthenium dyestuff sensitized TiO2 film and forms a compact insulating molecular layer due to the nature of small molecular organic dyestuffs. The incident photon-to-electron conversion efficiency of N719 at shorter wavelength regions is 49{\%}. After addition of a triazoloisoquinoline-based dyestuff for co-sensitization, the IPCE at 350-500 nm increased significantly. This can be attributed to the increased photocurrent of the cells, which improves the dye-sensitized photoelectric conversion efficiency from 6.23{\%} to 7.84{\%}, and the overall conversion efficiency increased by about 26{\%}. As a consequence, this low molecular weight organic dyestuff is a promising candidate as coadsorbent and cosensitizer for highly efficient dye-sensitized solar cells.",
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Triazoloisoquinoline-based/ruthenium-hybrid sensitizer for efficient dye-sensitized solar cells. / Lee, Che Lung; Lee, Wen-Shi; Yang, Cheng Hsien.

In: International Journal of Photoenergy, Vol. 2013, 984516, 16.12.2013.

Research output: Contribution to journalArticle

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AB - Triazoloisoquinoline-based organic dyestuffs were synthesized and used in the fabrication of dye-sensitized solar cells (DSSCs). After cosensitization with ruthenium complex, the triazoloisoquinoline-based organic dyestuffs overcame the deficiency of ruthenium dyestuff absorption in the blue part of the visible spectrum. This method also fills the blanks of ruthenium dyestuff sensitized TiO2 film and forms a compact insulating molecular layer due to the nature of small molecular organic dyestuffs. The incident photon-to-electron conversion efficiency of N719 at shorter wavelength regions is 49%. After addition of a triazoloisoquinoline-based dyestuff for co-sensitization, the IPCE at 350-500 nm increased significantly. This can be attributed to the increased photocurrent of the cells, which improves the dye-sensitized photoelectric conversion efficiency from 6.23% to 7.84%, and the overall conversion efficiency increased by about 26%. As a consequence, this low molecular weight organic dyestuff is a promising candidate as coadsorbent and cosensitizer for highly efficient dye-sensitized solar cells.

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