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Influence of addition of larger particles into 3-nm particles of TiO2 film on the performance of dye-sensitized solar cells

Wang, Hongxia & Bell, John M. (2007) Influence of addition of larger particles into 3-nm particles of TiO2 film on the performance of dye-sensitized solar cells. In Nicolau, Dan V., Abbott, Derek, Kalantar-Zadeh, Kourosh, Di Matteo, Tiziana, & Bezrukov, Sergey M. (Eds.) BioMEMS and Nanotechnology III: SPIE Volume 6799, 4-7 December 2007, Canberra, ACT, Australia.

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Abstract

The performance of dye-sensitized solar cells (DSC) based on the TiO2 film composed of 3 nm particles and mixtures of 3 nm and 400 nm or 25 nm particles synthesized by spray pyrolysis deposition has been investigated. An energy conversion efficiency of 8.44% (under the illumination of 100 mW/cm2, AM 1.5) has been achieved with the DSC based on the nanocrystalline TiO2 film consisting of 3 nm and 25 nm particles with a ratio of 3:4 by weight. The maximum incident photo-to-current conversion efficiency (IPCE) of the cell is 0.91, which is much higher than the maximum IPCE of the photoelectrode composed of either only 3 nm or the mixture of 3 nm and 400 nm particles (with the same ratio by weight) over the visible spectrum. SEM images show the formation of clusters in the TiO2 film containing 25 nm particles. It is proposed that the clusters are responsible for the high IPCE by increasing the light harvesting efficiency through enhanced light scattering and facilitating the electron transport of the DSC.

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ID Code: 15545
Item Type: Conference Paper
Keywords: Dye, sensitized solar cells, Light scattering effect, Photovoltaic performance, Incident photo, to, current conversion efficiency, Titanium dioxide nanoclusters
DOI: 10.1117/12.766953
ISBN: 9780819469700
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000) > COMMUNICATIONS TECHNOLOGIES (100500) > Optical Networks and Systems (100507)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > THEORETICAL AND COMPUTATIONAL CHEMISTRY (030700) > Reaction Kinetics and Dynamics (030703)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Institute for Sustainable Resources
Copyright Owner: Copyright 2007 SPIE--The International Society for Optical Engineering
Copyright Statement: This paper was published in [BioMEMS and Nanotechnology III: SPIE Volume 6799] and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Deposited On: 10 Nov 2008
Last Modified: 29 Feb 2012 23:39

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