Abstract
Photovoltaic performance of dye sensitized solar cell (DSSC) was enhanced by 19 and 69 % compared to untreated DSSC by treating the nanoporous titanium dioxide (TiO2) by ultra thin Aluminum oxide (Al2O3) and Hafnium oxide (HfO2) grown by atomic layer deposition method. Activation energy of dark current, obtained from the temperature dependent current-voltage (I-V-T), of the untreated DSSC was 1.03 eV on the other hand the DSSCs with Al2O3 and HfO2 surface treatment showed 1.27 and 1.31 eV respectively. A significant change in the activation energy of dark current, over 0.24 eV for Al2O3 treatment and 0.28 eV in case of HfO2 treatment, suggest that density and activity of surface states on nanoporous TiO2 was suppressed by ALD grown metal oxides to result improved photovoltaic performance. Further the enhanced DSSC performance was confirmed by external quantum efficiency measurement in the wavelength range of 350-750 nm.
Similar content being viewed by others
References
B. O’Regan, M. Gratzel, Nature 353, 737 (1991).
M. Durr, A. Schmid, M. Obermaier, S. Rosselli, A. Yasuda and G. Nelles, Nature Materials 4, 607 (2005).
J. R. Durrant and S. A. Haque, Nature Materials 4, 362 (2003).
M. Gratzel, C. R. Chimie 9, 578 (2006).
H. Nusbaumer, S. M. Zakeeruddin, J. E. Moser, and M. Gratzel, Chem. Eur. J. 9, 3756 (2003)
D. Cahen, G. Hodes, M. Gratzel, J. Franois Guillemoles, and I. Riess, J. Phys. Chem. B, 104, 2053 (2000).
S. Sakaguchi, H. Ueki, T. Kato, T. Kado, R. Shiratuchi, W. Takashima, K. Kaneto, S. Hayase, Journal of Photochemistry and Photobiology A: Chemistry 164, 117 (2004).
B. A. Gregg, F. Pichot, S. Ferrere, and C. L. Fields J. Phys. Chem. B 105, 1422 (2001).
V. Yong, S. Tiong Ho, and R. P. H. Chang, Appl. Phys. Lett. 92, 143506 (2008).
M. Liberatore, L. Burtone, T. M. Brown, A. Reale, A. Di Carlo, F. Decker, S. Caramori, and C. A. Bignozzi, Appl. Phys. Lett. 94, 173113 (2009).
A. Kay and M. Gratzel, Chem. Mater., 14, 2930 (2002).
14 E. Palomares, J. N. Clifford, S. A. Haque, T. Lutz and J. R. Durrant, Chem. Commun., 14, 1464 (2002).
P. M. Sommeling, B. C. O’Regan, R. R. Haswell, H. J. P. Smit, N. J. Bakker, J. J. T. Smits, J. M. Kroon, and J. A. M. van Roosmalen, J. Phys. Chem. B 110, 19191 (2006).
Y. Kim, B. J. Yoo, R. Vittal, Y. Lee, N.G. Park, K.J. Kim, Journal of Power Sources 175, 914 (2008).
F. Lenzmann, M. Nanu, O. Kijatkina, A. Belaidi, Thin Solid Films 451–452, 639 (2004).
M. Shanmugam, M. Farrokh Baroughi and D. Galipeau, Electronics Letters 45, 648 (2009).
Y. Noma, T. Kado, D. Ogata, Y. Hara and S. Hayase, Japanese Journal of Applied Physics 47, 505 (2008).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Shanmugam, M., Bills, B. & Baroughi, M.F. Role of Mesoporous TiO2 Surface States and Metal Oxide Treatment on Charge Transport of Dye Sensitized Solar Cells. MRS Online Proceedings Library 1270, 1103 (2010). https://doi.org/10.1557/PROC-1270-GG11-03
Published:
DOI: https://doi.org/10.1557/PROC-1270-GG11-03