Share This Article:

Increasing Dye-Sensitized Solar Cell Efficiency by ZnO Spin-Coating of the TiO2 Electrode: Effect of ZnO Amount

Abstract Full-Text HTML Download Download as PDF (Size:714KB) PP. 591-595
DOI: 10.4236/epe.2013.510065    4,202 Downloads   6,410 Views   Citations

ABSTRACT

This paper is concerned with the improvement of dye-sensitized solar cell (DSSC) efficiency upon ZnO-coating of the TiO2 electrode. Sol-gel ZnO of controlled amount by varying the number of sol drops during spin-coating is shown to increase the DSSC efficiency. The highest efficiency is obtained at a single sol drop with enhancement of 40%, while beyond this amount the efficiency falls down sharply to zero. Based on measured optical absorption spectra of the different dye-loaded electrodes, it is concluded that this amount of ZnO sol corresponds to the thinnest layer that can create the energy barrier to minimize the electron recombination rate without seriously affecting the dye adsorption efficiency of the TiO2 film.

Cite this paper

F. Al-Juaid and A. Merazga, "Increasing Dye-Sensitized Solar Cell Efficiency by ZnO Spin-Coating of the TiO2 Electrode: Effect of ZnO Amount," Energy and Power Engineering, Vol. 5 No. 10, 2013, pp. 591-595. doi: 10.4236/epe.2013.510065.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] B. O’Regan and M. Gratzel, “A Low-Cost High Efficiency Solar Cell Based on Dye-Sensitized Colloidal TiO2 Films,” Nature, Vol. 353, 1991, pp. 737-740.
http://dx.doi.org/10.1038/353737a0
[2] S. Ilican, Y. caglar and M. Caglar, “Preparation and Characterization of ZnO Thin Films Deposited by the Sol-Gel Spin-Coating Method,” Journal of Optoelectronics and Advanced Materials, Vol. 10, No. 10, 2008, p. 2578.
[3] D. Raoufi and T. Raoufi, “The Effect of Heat Treatment on the Physical Properties of Sol-Gel Derived ZnO Thin Films,” Applied Surface Science, Vol. 255, No. 11, 2009, pp. 5812-5817.
http://dx.doi.org/10.1016/j.apsusc.2009.01.010
[4] M. Smirnov, C. Baban and G. I. Rusu, “Structural and Optical Characteristics of Spin-Coated ZnO Thin Films,” Applied Surface Science, Vol. 256, No. 8, 2010, pp. 24052408.
http://dx.doi.org/10.1016/j.apsusc.2009.10.075
[5] K. Balachandra and P. Raji, “Synthesis and Characterization of Nano ZnO by Sol-Gel Spin-Coating,” Recent Research in Science and Technology, Vol. 3, No. 3, 2011, p. 48.
[6] Y.-J. Shin, et al., “Enhancement of Photovoltaic Properties of Ti Modified Nanocrystalline ZnO Electrode for Dye-Sensitized Solar Cells,” Bulletin of the Korean Chemical Society, Vol. 26, No. 12, 2005, pp. 1929-1930.
[7] M. C. Kao, H. Z. Chen and S. L. Young, “Effects of PreAnnealing Temperature of ZnO Thin Films on the Performance of Dye-Sensitized Solar Cells,” Applied Physics A, Vol. 98, No. 3, 2010, pp. 595-599.
http://dx.doi.org/10.1007/s00339-009-5467-9
[8] D. B. Menzies, et al., “Modification of Mesoporous TiO2 Electrodes by Surface Treatment with Titanium (IV), Indium (III) and Zirconium (IV) Oxide Precursors,” Nanotechnology, Vol. 18, No. 12, Article ID: 125608.
http://dx.doi.org/10.1088/0957-4484/18/12/125608
[9] S. Wu, et al., “Improvement in Dye-Sensitized Solar Cells Employing TiO2 Electrodes Coated with Al2O3 by Reactive Direct Current Magneton Sputtering,” Journal of Power Sources, Vol. 182, No. 1, 2008, p. 119.
[10] S. Wu, et al., “Enhancement in Dye-Sensitized Solar Cells Based on MgO-Coated TiO2 Electrodes by Reactive DC Magnetron Sputtering,” Nanotechnology, 2008.
[11] L. Li, et al., “Improved Performance of TiO2 Electrodes Coated with NiO by Magnetron Sputtering for Dye-Sensitized Solar Cells,” Applied Surface Science, Vol. 256, No. 14, 2010, p. 4533.
[12] Y. Liu, et al., “Efficiency Enhancement in Dye-Sensitized Solar Cells by Interfacial Modification of Conducting Glass/Mesoporous TiO2 Using a Novel ZnO Compact Blocking Film,” Journal of Power Sources, Vol. 196, No. 1, 2011, pp. 475-481.
http://dx.doi.org/10.1016/j.jpowsour.2010.07.031
[13] M. C. Kao, H. Z. Chen and S. L. Young, “Effects of ZnOCoating on the Performance of TiO2 Nanostructured Thin Films for Dye-Sensitized Solar Cells,” Applied Physics A, Vol. 97, No. 2, 2009, pp. 469-474.
http://dx.doi.org/10.1007/s00339-009-5244-9
[14] S. S. Kim, J. H. Yum and Y. E. Sung, “Improved Performance of a Dye-Sensitized Solar Cell Using a TiO2/ ZnO/Eosin Y Electrode,” Solar Energy Materials and Solar Cells, Vol. 79, No. 4, 2003, pp. 495-505.
http://dx.doi.org/10.1016/S0927-0248(03)00065-5
[15] Y. Song, M. Zheng, L. Ma and W. Shen, “Anisotropic Growth and Formation Mechanism Investigation of 1D ZnO Nanorods in Spin-Coating Sol-Gel Process,” Journal of Nanoscience and Nanotechnology, Vol. 10, No. 1, 2010, pp. 426-432. http://dx.doi.org/10.1166/jnn.2010.1724
[16] H. Yu, S. Zhang, H. Zhao, G. Will and P. Liu, “An Efficient and Low-Cost TiO2 Compact Layer for Performance Improvement of Dye-Sensitized Solar Cells,” Electrochimica Acta, Vol. 54, No. 4, 2009, pp. 1319-1324.
http://dx.doi.org/10.1016/j.electacta.2008.09.025
[17] S. Wu, et al., “Improvement in Dye-Sensitized Solar Cells with a ZnO-Coated TiO2 Electrode by rf Magnetron Sputtering,” Applied Physics Letters, Vol. 92, No. 12, 2008, Article ID: 122106.
http://dx.doi.org/10.1063/1.2903105
[18] M. Penny, T. Farrell, G. Will and J. Bell, “Modeling Interfacial Charge Transfer in Dye-Sensitized Solar Cells,” Journal of Photochemistry and Photobiology A: Chemistry, Vol. 164, 2004, p. 41.
[19] I. Bedja, P. V. Kama, X. Hua, P. G. Lappin and S. Hotchandani, “Photosensitization of Nanocrystalline ZnO Films by Bis (2,2‘-bipyridine)(2,2‘-bipyridine-4,4‘-dicarboxylic acid) Ruthenium (II),” Langmuir, Vol. 13, No. 8, 1997, pp. 2398-2403. http://dx.doi.org/10.1021/la9620115
[20] T. Soga, “Nanostructured Materials for Solar Energy Conversion,” Elsevier B. V., 2006.
[21] Q. Zhang, et al., “Effects of Lithium Ions on Dye-Sensitized ZnO Aggregate Solar Cells,” Chemistry of Materials, Vol. 22, No. 8, 2010, pp. 2427-2433.
http://dx.doi.org/10.1021/cm9009942
[22] A. Umar, A. A. Alharbi, P. Singh and S. A. Sayari, “Growth of Aligned Hexagonal ZnO Nanorods on FTO Substrate for Dye-Sensitized Solar Cells (DSSCs) Application,” Journal of Nanoscience and Nanotechnology, Vol. 11, No. 4, 2011, pp. 3560-3564.

  
comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.