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Natural dye sensitized TiO2 nanorods assembly of broccoli shape based solar cells

Yuvapragasam, Akila; Muthukumarasamy, N.; Agilan, S.; Velauthapillai, Dhayalan; Senthil, T.S.; Sundaram, Senthilarasu

Authors

Akila Yuvapragasam

N. Muthukumarasamy

S. Agilan

Dhayalan Velauthapillai

T.S. Senthil



Abstract

TiO2 nanorods based thin films with rutile phase have been synthesized using template free low temperature hydrothermal method. The scanning electron microscope images showed that the prepared TiO2 samples were made of TiO2 nanorods and the nanorods had arranged by itself to form a broccoli like shape. The X-ray diffraction studies revealed that the prepared TiO2 samples exhibit rutile phase. The grown TiO2 nanorods had been sensitized using the flowers of Sesbania (S) grandiflora, leaves of Camellia (C) sinensis and roots of Rubia (R) tinctorum. Dye sensitized solar cells had been fabricated using the natural dye sensitized TiO2 nanorods based thin film photoelectrode and the open circuit voltage and short circuit current density were found to lie in the range of 0.45–0.6 V and 5.6–6.4 mA/cm2 respectively. The photovoltaic performance of all the fabricated natural dye sensitized TiO2 solar cells indicate that natural dyes have the potential to be used as effective sensitizer in dye sensitized solar cells.

Journal Article Type Article
Acceptance Date Apr 16, 2015
Online Publication Date May 1, 2015
Publication Date 2015-07
Deposit Date Mar 14, 2023
Print ISSN 1011-1344
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 148
Pages 223-231
DOI https://doi.org/10.1016/j.jphotobiol.2015.04.017