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Advances in OptoElectronics
Volume 2014 (2014), Article ID 397681, 9 pages
Research Article

The CdS/CdSe/ZnS Photoanode Cosensitized Solar Cells Basedon Pt, CuS, Cu2S, and PbS Counter Electrodes

1Faculty of Physics, Dong Thap University, Dong Thap Province, Cao Lanh City 870000, Vietnam
2Vietnam National University, Ho Chi Minh City 700000, Vietnam
3University of Science, Vietnam National University, Ho Chi Minh City 700000, Vietnam

Received 14 October 2013; Revised 25 December 2013; Accepted 25 December 2013; Published 27 February 2014

Academic Editor: Armin Gerhard Aberle

Copyright © 2014 Tung Ha Thanh 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.


Highly ordered mesoporous TiO2 modified by CdS, CdSe, and ZnS quantum dots (QDs) was fabricated by successive ionic layer adsorption and reaction (SILAR) method. The quantity of material deposition seems to be affected not only by the employed deposition method but also and mainly by the nature of the underlying layer. The CdS, CdSe, and ZnS QDs modification expands the photoresponse range of mesoporous TiO2 from ultraviolet region to visible range, as confirmed by UV-Vis spectrum. Optimized anode electrodes led to solar cells producing high current densities. Pt, CuS, PbS, and Cu2S have been used as electrocatalysts on counter electrodes. The maximum solar conversion efficiency reached in this work was 1.52% and was obtained by using Pt electrocatalyst. CuS, PbS, and Cu2S gave high currents and this was in line with the low charge transfer resistances recorded in their case.