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Advances in OptoElectronics
Volume 2011, Article ID 376369, 9 pages
http://dx.doi.org/10.1155/2011/376369
Research Article

Change of Dye Bath for Sensitisation of Nanocrystalline T i O 𝟐 Films: Enhances Performance of Dye-Sensitized Solar Cells

1Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500607, India
2Aisin Cosmos R and D Co. Ltd, Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500607, India

Received 24 April 2011; Accepted 25 May 2011

Academic Editor: Surya Prakash Singh

Copyright © 2011 Malapaka Chandrasekharam et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The photovoltaic performance of the heteroleptic H102 and HRD2 sensitizers was measured in DSSC and compared with that of reference N719 under similar fabrication and evaluation conditions. The Dye-Sensitised TiO2 electrodes were prepared by staining the electrodes in ethanol bath and 1/1 v/v acetonitrile/tert-butanol (binary liquid) mixture bath separately and the DSSCs based on these sensitizers show that the change of dye bath from ethanol to the binary liquid mixture enhances the photocurrent action spectrum and solar-to-electricity conversion efficiencies, (η). Using ethanol for sensitisation of TiO2 electrodes, the efficiencies obtained for H102, HRD2 and N719 are 4.31%, 4.62%, and 5.46%, respectively, while in binary liquid mixture bath, the corresponding values are enhanced to 5.89%, 4.87%, and 7.23%, respectively, under comparable conditions.