Co-sedimentation of TiO 2 nanoparticles and polymer beads to fabricate macroporous TiO 2 photoelectrodes

Min A. Kim, Young Gon Seo, Sang Soo Lee, Wonmok Lee, Hyunjung Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Dye-sensitized solar cells based on highly porous nanocrystalline TiO 2 films have drawn considerable attention due to their high conversion efficiency and low production cost. TiO 2 nanocrystalline electrodes have been investigated extensively as a key material. In this study, we discuss dye-sensitized solar cells based on macroporous TiO 2 films using a highly-dispersed aqueous solution of TiO 2 nanoparticles and polymeric particles. After drying this solution on the conducting glass substrate, the sacrificial polymer particles were removed selectively by thermal sintering at high temperatures over 400 °C or chemical treatment at the low temperature of 150 °C. This method provides the flexible control of TiO 2 fractions or pore size or fabrication temperature. Also highly-dispersed TiO 2 particles with a high crystallinity would provide a promising solution on low-temperature process for flexible DSSCs.

Original languageEnglish
Pages (from-to)3247-3251
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number4
Publication statusPublished - 2012


  • Dye-sensitized solar cells
  • Highly dispersed TiO solution
  • Low temperature process
  • Macroporous TiO films
  • Polymer microspheres

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics


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