Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells

Charge transport and recombination are relatively ignored parameters while upscaling dye-sensitized solar cells (DSCs). Enhanced photovoltaic parameters are anticipated by merely widening the devices physical dimensions, viz., thickness and area as evident from the device design adopted in reported...

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Main Authors:	Fakharuddin, Azhar, Irfan, Ahmed, Zulkeflee, Kalidin, M. M., Yusoff, Rajan, Jose
Format:	Article
Language:	English
Published:	AIP Publishing LLC. 2014
Subjects:	TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/5742/ http://umpir.ump.edu.my/id/eprint/5742/ http://umpir.ump.edu.my/id/eprint/5742/ http://umpir.ump.edu.my/id/eprint/5742/1/1.4871779.pdf

id	ump-5742
recordtype	eprints
spelling	ump-57422018-07-26T06:54:27Z http://umpir.ump.edu.my/id/eprint/5742/ Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells Fakharuddin, Azhar Irfan, Ahmed Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose TK Electrical engineering. Electronics Nuclear engineering Charge transport and recombination are relatively ignored parameters while upscaling dye-sensitized solar cells (DSCs). Enhanced photovoltaic parameters are anticipated by merely widening the devices physical dimensions, viz., thickness and area as evident from the device design adopted in reported large area DSCs. These strip designs lead to ≤50% loss in photocurrent compared to the high efficiency lab scale devices. Herein, we report that the key to achieving higher current density (JSC ) is optimized diffusion volume rather than the increased photoelectrode area because kinetics of the devices is strongly influenced by the varied choices of diffusion pathways upon increasing the electrode area. For a given electrode area and thickness, we altered the photoelectrode design by splitting the electrode into multiple fractions to restrict the electron diffusion pathways. We observed a correlation between the device physical dimensions and its charge collection efficiency via current-voltage and impedance spectroscopy measurements. The modified electrode designs showed >50% increased JSC due to shorter transport time, higher recombination resistance and enhanced charge collection efficiency compared to the conventional ones despite their similar active volume (∼3.36 × 10−4 cm3). A detailed charge transport characteristic of the split devices and their comparison with single electrode configuration is described in this article. AIP Publishing LLC. 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5742/1/1.4871779.pdf Fakharuddin, Azhar and Irfan, Ahmed and Zulkeflee, Kalidin and M. M., Yusoff and Rajan, Jose (2014) Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells. Journal of Applied Physics, 115 (164509). pp. 1-9. ISSN 0021-8979 (print); 1089-7550 (online) http://dx.doi.org/10.1063/1.4871779 DOI: 10.1063/1.4871779
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering Fakharuddin, Azhar Irfan, Ahmed Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells
description	Charge transport and recombination are relatively ignored parameters while upscaling dye-sensitized solar cells (DSCs). Enhanced photovoltaic parameters are anticipated by merely widening the devices physical dimensions, viz., thickness and area as evident from the device design adopted in reported large area DSCs. These strip designs lead to ≤50% loss in photocurrent compared to the high efficiency lab scale devices. Herein, we report that the key to achieving higher current density (JSC ) is optimized diffusion volume rather than the increased photoelectrode area because kinetics of the devices is strongly influenced by the varied choices of diffusion pathways upon increasing the electrode area. For a given electrode area and thickness, we altered the photoelectrode design by splitting the electrode into multiple fractions to restrict the electron diffusion pathways. We observed a correlation between the device physical dimensions and its charge collection efficiency via current-voltage and impedance spectroscopy measurements. The modified electrode designs showed >50% increased JSC due to shorter transport time, higher recombination resistance and enhanced charge collection efficiency compared to the conventional ones despite their similar active volume (∼3.36 × 10−4 cm3). A detailed charge transport characteristic of the split devices and their comparison with single electrode configuration is described in this article.
format	Article
author	Fakharuddin, Azhar Irfan, Ahmed Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose
author_facet	Fakharuddin, Azhar Irfan, Ahmed Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose
author_sort	Fakharuddin, Azhar
title	Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells
title_short	Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells
title_full	Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells
title_fullStr	Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells
title_full_unstemmed	Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells
title_sort	charge transport through split photoelectrodes in dye-sensitized solar cells
publisher	AIP Publishing LLC.
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/5742/ http://umpir.ump.edu.my/id/eprint/5742/ http://umpir.ump.edu.my/id/eprint/5742/ http://umpir.ump.edu.my/id/eprint/5742/1/1.4871779.pdf
first_indexed	2023-09-18T22:01:08Z
last_indexed	2023-09-18T22:01:08Z
_version_	1777414405597691904

Charge Transport Through Split Photoelectrodes in Dye-sensitized Solar Cells

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