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Proceedings Paper

Co-sensitized natural dyes potentially used to enhance light harvesting capability
Author(s): R. Amelia; D. Sawitri; D. D. Risanti
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Paper Abstract

We present the photoelectrochemical properties of dye-sensitized solar cells using natural pigments containing anthocyanins, betalains, and caroteins. The dyes were adsorbed by a photoanode that was fabricated from nanocrystalline TiO2 on transparent conductive glass. TiO2 comprises of 100% anatase and 90:10 anatase:rutile fraction. The dyes extracted from mangosteen pericarp, Musa aromatica pericarp, Celosia cristata flower and red beet root were characterized through UV-vis and IPCE. The effectiveness of the dyes was explained through photocurrent as a function of incident light power. It was found that the cocktail and multilayered dyes comprised of anthocyanins and caroteins is beneficial to obtain high photocurrent, whereas betalains is not recommended to be applied on untreated TiO2. Due to the bandgap properties of rutile and anatase, the presence of 10% rutile in TiO2 is favourable to further enhance the electron transport.

Paper Details

Date Published: 9 January 2015
PDF: 6 pages
Proc. SPIE 9444, International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2014), 94440O (9 January 2015); doi: 10.1117/12.2078268
Show Author Affiliations
R. Amelia, Institut Teknologi Sepuluh Nopember (Indonesia)
D. Sawitri, Institut Teknologi Sepuluh Nopember (Indonesia)
D. D. Risanti, Institut Teknologi Sepuluh Nopember (Indonesia)

Published in SPIE Proceedings Vol. 9444:
International Seminar on Photonics, Optics, and Its Applications (ISPhOA 2014)
Aulia Nasution, Editor(s)

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