A study of TiO2/carbon black composition as counter electrode materials for dye-sensitized solar cells

Jeongmin Lim, Sang Yeoul Ryu, Jeonghun Kim, Yongseok Jun

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

This study describes a systematic approach of TiO2/carbon black nanoparticles with respect to the loading amount in order to optimize the catalytic ability of triiodide reduction for dye-sensitized solar cells. In particular, the cell using an optimized TiO2and carbon black electrode presents an energy conversion efficiency of 7.4% with a 5:1 ratio of a 40-nm TiO2to carbon black. Based on the electrochemical analysis, the charge-transfer resistance of the carbon counter electrode changed based on the carbon black powder content. Electrochemical impedance spectroscopy and cyclic voltammetry study show lower resistance compared to the Pt counter electrode. The obtained nanostructures and photo electrochemical study were characterized.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalNanoscale Research Letters
Volume8
Issue number1
DOIs
Publication statusPublished - 2013 Jun 13
Externally publishedYes

Keywords

  • Carbon black
  • Counter electrode
  • Dye-sensitized solar cells
  • Nano composite

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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