Study on photovoltaic properties of dye-sensitized solar cells based on indigo dyes in the presence of an anti-aggregation agent

Document Type : Research Article

Authors

1 Department of Organic Colorants, Institute for Color Science and Technology, Tehran

2 Center of Excellence of Color Science and Technology, Institute for Color Science and Technology, Tehran/ Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran.

3 Department of Organic Colorants, Institute for Color Science and Technology, Tehran/ Center of Excellence of Color Science and Technology, Institute for Color Science and Technology, Tehran

/amnc.2016.4.16.1

Abstract

Nanostructured dye sensitized solar cells (DSSCs) based on indigo dyes exhibit medium to high power
conversion efficiency. Such organic dye molecules easily experience aggregation. As aggregation takes
place in dye molecules, electron transfer process in dye-sensitized solar cell will be worsen. Therefore,
anti-aggregation agents are commonly added to organic solution in DSSCs. Spectrophotometric evaluations
of indigo dyes applied on a TiO2 substrate in the presence and absence of an anti-aggregation
agent were carried out in order to assess changes in the efficacy of dyes. The results show that addition
of anti-aggregation agent reduced undesired J aggregates. Finally, dye sensitized solar cells were fabricated
to determine the photovoltaic properties as well as the influence of anti-aggregation agents on
their performance.

Keywords

References

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