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2275038 
Journal Article 
Natural Dye Extracted from Rhododendron Species Flowers as a Photosensitizer in Dye Sensitized Solar Cell 
Kim, HeeJe; Bin, YeoTae; Karthick, SN; Hemalatha, KV; Raj, CJ; Venkatesan, S; Park, S; Vijayakumar, G 
2013 
Yes 
International Journal of Electrochemical Science
ISSN: 1452-3981 
8 
5 
6734-6743 
WOS:000319861000063 
The natural dye, anthocyanin, was extracted from the flowers of Rhododendron species with three different colors, pink, red and violet, using a simple extraction technique, and was used as the sensitizer in dye-sensitized solar cells. The dyes were treated with nitric and acetic acids to examine their effects on the power conversion efficiency. According to the experimental results, the performance was better with the acetic acid-treated anthocyanin. The Jsc value for the acetic acid-treated pink, red and violet dyes increased to 0.887, 0.932 and 0.737 mA/cm(2) compared to nitric acid treated and bare dye. The conversion efficiency of the acetic acid-treated pink, red and violet was 0.35%, 0.36%, 0.28%, respectively, which was higher than the nitric acid-treated and bare dye. This paper briefly discusses the simple extraction technique of these natural dyes and their performance in DSSCs. 
Natural dye; Anthocyanin; FT-IR; Conversion efficiency