The Layer Boundary Effect on Multi-Layer Mesoporous TiO2 Film Based Dye Sensitized Solar Cells

Kai Zhu, Feng Xu, Yixin Zhao

Research output: Contribution to journalArticlepeer-review

3 Scopus Citations

Abstract

Multi-layer mesoporous TiO2 prepared by screen printing is widely used for fabrication of high-efficiency dye-sensitized solar cells (DSSCs). We compare the three types of ∼10 μm thick mesoporous TiO2 films, which were screen printed as 1-, 2- and 4-layers using the same TiO2 nanocrystal paste. The layer boundary of the multi-layer mesoporous TiO2 films was observed in the cross-section SEM. The existence of a layer boundary could reduce the photoelectron diffusion length with the increase of layer number. However, the photoelectron diffusion lengths of the Z907 dye sensitized solar cells based on these different layered mesoporous TiO2 films are all longer than the film thickness. Consequently, the photovoltaic performance seems to have little dependence on the layer number of the multi-layer TiO2 based DSSCs.

Original languageAmerican English
Pages (from-to)98167-98170
Number of pages4
JournalRSC Advances
Volume6
Issue number100
DOIs
StatePublished - 2016

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2016.

NREL Publication Number

  • NREL/JA-5900-67435

Keywords

  • DSSC
  • dye-sensitized solar cells
  • mesoporous films

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