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Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells / Cecile Charbonneau, Theo Tanner, Matthew Davies, Trystan M. Watson, David A. Worsley

Journal of Nanomaterials, Volume: 2016

Swansea University Authors: Cecile Charbonneau, Matthew Davies

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DOI (Published version): 10.1155/2016/9324858

Abstract

Low-cost water-based P25-TiO2 pastes were formulated and used to produce porous TiO2 films in application to the fabrication of dye-sensitized solar cells. The structural properties of the films were characterized using a variety of techniques such as stylus profilometry, FEG-SEM imaging, BET surfac...

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Published in: Journal of Nanomaterials
ISSN: 1687-4110
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa28016
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spelling 2017-07-07T11:48:56.2343191 v2 28016 2016-05-17 Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells 4dc059714847cb22ed922ab058950560 0000-0001-9887-2007 Cecile Charbonneau Cecile Charbonneau true false 4ad478e342120ca3434657eb13527636 0000-0003-2595-5121 Matthew Davies Matthew Davies true false 2016-05-17 MTLS Low-cost water-based P25-TiO2 pastes were formulated and used to produce porous TiO2 films in application to the fabrication of dye-sensitized solar cells. The structural properties of the films were characterized using a variety of techniques such as stylus profilometry, FEG-SEM imaging, BET surface area, and BJH pore size analyses. These were compared to films produced from a commercial paste, DSL 18 NR-AO (Dyesol). The major difference was in the fraction of macroporosity: 23% of the total pore volume for films produced with the commercial material and 67–73% for the P25-TiO2 films owing to the vast difference in dispersion and size distribution of the particles in the two types of pastes. The macroporosity was found to have a dramatic effect on the dye diffusion kinetics measured using in situ UV-Vis reflectance spectroscopy. The sensitization of P25-based films was much faster for heavily macroporous P25-TiO2 films (>90% saturation at 15–35 mins) than for their commercial analogue (>90% saturation at 110 mins). DSC devices built with optimized P25-TiO2 photoanodes showed better performance at short dye immersion time (30 mins and 1 hr) due to faster percolation of the dye molecules through the film. Journal Article Journal of Nanomaterials 2016 1687-4110 31 12 2016 2016-12-31 10.1155/2016/9324858 http://www.hindawi.com/journals/jnm/2016/9324858/ 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. COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2017-07-07T11:48:56.2343191 2016-05-17T11:47:16.0372972 College of Engineering Engineering Cecile Charbonneau 0000-0001-9887-2007 1 Theo Tanner 2 Matthew Davies 0000-0003-2595-5121 3 Trystan M. Watson 4 David A. Worsley 5 0028016-28072016141157.pdf charbonneau2016.pdf 2016-07-28T14:11:57.6500000 Output 3160693 application/pdf Version of Record true 2016-07-28T00:00:00.0000000 false
title Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells
spellingShingle Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells
Cecile, Charbonneau
Matthew, Davies
title_short Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells
title_full Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells
title_fullStr Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells
title_full_unstemmed Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells
title_sort Effect of TiO2 Photoanode Porosity on Dye Diffusion Kinetics and Performance of Standard Dye-Sensitized Solar Cells
author_id_str_mv 4dc059714847cb22ed922ab058950560
4ad478e342120ca3434657eb13527636
author_id_fullname_str_mv 4dc059714847cb22ed922ab058950560_***_Cecile, Charbonneau
4ad478e342120ca3434657eb13527636_***_Matthew, Davies
author Cecile, Charbonneau
Matthew, Davies
author2 Cecile Charbonneau
Theo Tanner
Matthew Davies
Trystan M. Watson
David A. Worsley
format Journal article
container_title Journal of Nanomaterials
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publishDate 2016
institution Swansea University
issn 1687-4110
doi_str_mv 10.1155/2016/9324858
college_str College of Engineering
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hierarchy_top_title College of Engineering
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url http://www.hindawi.com/journals/jnm/2016/9324858/
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description Low-cost water-based P25-TiO2 pastes were formulated and used to produce porous TiO2 films in application to the fabrication of dye-sensitized solar cells. The structural properties of the films were characterized using a variety of techniques such as stylus profilometry, FEG-SEM imaging, BET surface area, and BJH pore size analyses. These were compared to films produced from a commercial paste, DSL 18 NR-AO (Dyesol). The major difference was in the fraction of macroporosity: 23% of the total pore volume for films produced with the commercial material and 67–73% for the P25-TiO2 films owing to the vast difference in dispersion and size distribution of the particles in the two types of pastes. The macroporosity was found to have a dramatic effect on the dye diffusion kinetics measured using in situ UV-Vis reflectance spectroscopy. The sensitization of P25-based films was much faster for heavily macroporous P25-TiO2 films (>90% saturation at 15–35 mins) than for their commercial analogue (>90% saturation at 110 mins). DSC devices built with optimized P25-TiO2 photoanodes showed better performance at short dye immersion time (30 mins and 1 hr) due to faster percolation of the dye molecules through the film.
published_date 2016-12-31T03:46:50Z
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