Application of hybrid blocking layers in solid-state dye-sensitized solar cells

Philipp Lellig, Michael Meister, Jannis W. Ochsmann, Martin A. Niedermeier, Monika Rawolle, Frederic Laquai, Peter Müller-Buschbaum, Jochen S. Gutmann*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

A hybrid blocking layer consisting of a conducting TiO2 network embedded in a ceramic matrix is implemented in a solid-state dye-sensitized solar cell. This novel type of blocking layer is thinner than the classical blocking layer films as shown with SEM and XRR measurements, and thereby the conductivity of the hybrid film is increased by 110%. A percolating TiO2 network, proven by TEM/ESI and GISAXS measurements, allows for the charge transport. Although being thinner, the hybrid film completely separates the rough electrode material from the hole-transport medium in solar cells to avoid the recombination of charge carriers at this interface. In total, the power conversion efficiency of solar cells is improved: the application in photovoltaics shows that the efficiency of devices with the hybrid blocking layer is increased by 6% compared to identical solar cells employing the conventional blocking layer.

Original languageEnglish (US)
Article number502
JournalSpringerPlus
Volume4
Issue number1
DOIs
StatePublished - Dec 25 2015

Keywords

  • Blocking layer
  • Hybrid
  • Solar cells
  • Titanium dioxide

ASJC Scopus subject areas

  • General

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