Efficiency enhancement of dye-sensitized TiO2 solar cell based on ruthenium(II) terpyridyl complex photosensitizer

Riadh Sahnoun, Agalya Govindasamy, Akira Miyamoto

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We theoretically investigated the influence of the ligands on the enhancement of the efficiency toward absorption in the solar spectrum of ruthenium(II) terpyridyl complex. In the present work, the NCS ligands of the parent black dye 4,4′,4″-tricarboxy-2,2′:6′,2″-terpyridine)ruthenium(II) complex (BD0) were kept unchanged, while π-conjugating spacers were introduced between the terpyridine ligands and the anchoring groups -COOH. Molecular structures, electronic, and spectroscopic properties of four designed black dyes, in addition to the parent black dye (BD0), were examined. Compared with the parent black dye BD0, broad and intense absorption bands in the infrared and near-infrared region (red-shifted) were found, featuring the enhancement of the absorption efficiency resulting from the insertion of the proposed π-conjugating spacers.

Original languageEnglish
Pages (from-to)977-992
Number of pages16
JournalInternational Journal of Energy Research
Volume39
Issue number7
DOIs
Publication statusPublished - 2015 Jun 10

Keywords

  • Absorption band
  • Black dye
  • Density functional
  • Ligand
  • Ruthenium(II) terpyridyl complex
  • π-conjugating spacers

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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