Performance improvement of Sb 2S 3-sensitized solar cell by introducing hole buffer layer in cobalt complex electrolyte

Sang Hyuk Im, Hi Jung Kim, Jae Hui Rhee, Choong Sun Lim, Sang Il Seok

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


We found that the insertion of the poly-3-hexylthiophene (P3HT) layer into the pristine device results in great improvement of the efficiency, from 2.0% to 3.3% at 1 sun illumination. The improvement was mainly attributed to the improved fill factor, which for the Sb 2S 3 sensitized solar cell was seriously degraded from 56.0% (at 0.1 sun) to 31.5% (at 1 sun), whereas the fill factor of the Sb 2S 3/P3HT sensitized solar cell was only moderately degraded, from 59.3% (at 0.1 sun) to 40.4%. The role of P3HT as a hole buffer layer was analyzed by electrochemical impedance spectroscopy (EIS).

Original languageEnglish
Pages (from-to)2799-2802
Number of pages4
JournalEnergy and Environmental Science
Issue number8
Publication statusPublished - 2011 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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