Hierarchical TiO 2 spheres architectures for quasi solid state dye-sensitized solar cells by living radical polymerization and sol-gel process

Jung Tae Park, Jong Hak Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Titanium dioxide (TiO 2) photoelectrode is one of the most important components in a dye-sentisized solar cell (DSSC). In common, the overall performance of the DSSC depends on the surface area of the TiO 2 photoelectrode which is directly correlated to the amount of dye loading. Dye loading increased with the increase in the surface area of TiO 2 layer that enhanced short circuit current (J sc) performance in DSSC. In addition, for better penetration of electrolytes, it is essential to use the mesoporous or macroporous TiO 2 photoelectrode structure than microporous TiO 2 photoelectrode structure. The photoelectrode made up of from commercially available TiO 2 (P25, Degussa) has limitations mainly because of lower surface area which motivated us to modify it by atom transfer radical polymerization (ATRP) process with hydrophilic poly(ethylene glycol) methyl ether methacrylate (POEM). Dye-sensitized solar cells (DSSCs) made from TiO 2 spheres with hierarchical pores exhibited improved photovoltaic efficiency (3.30% for low molecular weight (M w) and 2.50% for high M w polymer electrolytes), as compared to those from pristine TiO 2 nanoparticles (2.40% for low M w and 1.30 % for high M w) at 100 mW/cm 2, due to the increased surface areas and light scattering.

Original languageEnglish
Title of host publication2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Pages409-412
Number of pages4
DOIs
Publication statusPublished - 2011 Dec 1
Event2011 11th IEEE International Conference on Nanotechnology, NANO 2011 - Portland, OR, United States
Duration: 2011 Aug 152011 Aug 19

Publication series

NameProceedings of the IEEE Conference on Nanotechnology
ISSN (Print)1944-9399
ISSN (Electronic)1944-9380

Other

Other2011 11th IEEE International Conference on Nanotechnology, NANO 2011
CountryUnited States
CityPortland, OR
Period11/8/1511/8/19

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Hierarchical TiO <sub>2</sub> spheres architectures for quasi solid state dye-sensitized solar cells by living radical polymerization and sol-gel process'. Together they form a unique fingerprint.

  • Cite this

    Park, J. T., & Kim, J. H. (2011). Hierarchical TiO 2 spheres architectures for quasi solid state dye-sensitized solar cells by living radical polymerization and sol-gel process. In 2011 11th IEEE International Conference on Nanotechnology, NANO 2011 (pp. 409-412). [6144356] (Proceedings of the IEEE Conference on Nanotechnology). https://doi.org/10.1109/NANO.2011.6144356