Jump to main content
Jump to site search

Issue 22, 2012
Previous Article Next Article

Interface control with layer-by-layer assembled ionic polymers for efficient low-temperature dye-sensitized solar cells

Author affiliations

Abstract

Herein we report a novel method for fabricating highly efficient dye-sensitized solar cells (DSCs) at low temperature (<150 °C). The ionic polymers of poly(allylamine hydrochloride) (PAH) and poly(sodium 4-styrenesulfonate) (PSS) were layer-by-layer deposited as an interfacial layer (IL) on the FTO substrate, before the nanoporous TiO2 layer was coated by a typical doctor-blade method. The presence of ultrathin (PAH/PSS)n IL created excellent adhesion of the TiO2 layer to the FTO substrate, leading to efficient transport of photo-injected electrons from TiO2 to FTO, as well as blocking the back-transport reaction from FTO to I3. As a result, the fill factor (FF) was remarkably increased from 0.709 to 0.783, with a significant increase of the open circuit voltage (Voc) from 760 to 803 mV and the short circuit current (Jsc) from 8.078 to 8.768 mA cm−2, leading to the improvement of the photovoltaic conversion efficiency (η) from 4.41 to 5.52%. With optimization of the TiO2 electrode structure, η of the DSC fabricated at 140 °C was enhanced to 7.14%.

Graphical abstract: Interface control with layer-by-layer assembled ionic polymers for efficient low-temperature dye-sensitized solar cells

Back to tab navigation

Publication details

The article was received on 13 Jan 2012, accepted on 28 Mar 2012 and first published on 03 Apr 2012


Article type: Paper
DOI: 10.1039/C2JM30247K
Citation: J. Mater. Chem., 2012,22, 11179-11184
  •   Request permissions

    Interface control with layer-by-layer assembled ionic polymers for efficient low-temperature dye-sensitized solar cells

    K. H. Kim, J. H. Moon, E. Y. Kim, H. J. Kim, S. H. Jang and W. I. Lee, J. Mater. Chem., 2012, 22, 11179
    DOI: 10.1039/C2JM30247K

Search articles by author

Spotlight

Advertisements