Metal-Free Indeno[2,1-b]thiophene-Based Sensitizers for Dye-Sensitized Solar Cells

Chia Jung Liang, Yu Ju Lin, Yung Sheng Yen, Jiann T. Lin*, Ming Chang P. Yeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A series of indeno[2,1-b]thiophene-containing organic dyes (IDT1–IDT5) have been synthesized, and their UV/Vis spectra extend beyond 700 nm. These dyes were employed as sensitizers for dye-sensitized solar cells (DSSCs). Among them, dyes IDT3–IDT5 with a thiophene unit conjugated with an anchor have better light harvesting ability and higher J SC values. Dye aggregation contributes substantially to the photocurrent in the near infrared region. The dye IDT5, with chenodeoxycholic acid (CDCA) as the co-adsorbent, has the highest power conversion efficiency (5.06 %) under AM 1.5G simulated sunlight irradiation, which is 68 % of the standard device based on N719 dye.

Original languageEnglish
Pages (from-to)801-811
Number of pages11
JournalAsian Journal of Organic Chemistry
Issue number6
Publication statusPublished - 2016 Jun 1


  • aggregation
  • dye-sensitized solar cells
  • heterocycles
  • indeno[2,1-b]thiophene
  • sensitizers

ASJC Scopus subject areas

  • Organic Chemistry


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