Application of azo dye as sensitizer in dye-sensitized solar cells

Journal: Vol.8, No.4, autumn 2015 - Article 1   Pages :  259 Until 265

Article Code:

Sh. Rouhani: Institute of Color Science and Technology - Center of Excellence for Color Science and Technology,Department of Organic Colorants
M. Hosseinnezhad: Institute for Color Science and Technology - Center of Excellence for Color Science and Technology,Department of Organic Colorants

Article's abstract:

An azo dye used as photosensitizers in Dye-sensitized solar cells DSSCs. Azo dyes economically superior to organometallic dyes because they are color variation and cheap. The spectrophotometric evaluation of an azo dye in solution and on a TiO2 substrate show that the dye form J-aggregation on the nanostructured TiO2 substrate. Oxidation potential measurements for used azo dyes ensured an energetically permissible and thermodynamically favourable charge transfer throughout the continuous cycle of photo-electric conversion. The performance of dye-sensitized solar cells based on azo dyes have been studied. The results illustrate that the dye containing acetic acid and sulfonic acid as the acceptor group gave the maximum conversion efficiency 3.52 and 3.17 in the presence and absence of anti-aggregation agent, respectively.

Dye-sensitized solar cells; Sensitizers; Photovoltaic materials; Conversion efficiencies; Azo dye.

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Dr. Farahnaz Nourmohammadian
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Dr. Mozhgan Hosseinnezhad
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Institute for Color Science and Technology (ICST)

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