Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy

A number of nanocrystalline, mesoporous large area (~0.2- 2 cm2) dye-sensitized solar cells (DSSCs) are probed by electrochemical impedance spectroscopy measurements to realize their carrier dynamics such as charge transport resistance (RCT), electron diffusion coefficient (Dη), and electron lifetim...

Full description

Bibliographic Details
Main Authors:	Fakharuddin, Azhar, Irfan, Ahmed, Qamar, Wali, Zulkeflee, Kalidin, M. M., Yusoff, Rajan, Jose
Format:	Article
Language:	English
Published:	Trans Tech Publications, Switzerland 2014
Subjects:	TK Electrical engineering. Electronics Nuclear engineering QC Physics
Online Access:	http://umpir.ump.edu.my/id/eprint/5837/ http://umpir.ump.edu.my/id/eprint/5837/ http://umpir.ump.edu.my/id/eprint/5837/ http://umpir.ump.edu.my/id/eprint/5837/1/fist-2014-azhar-scientific.pdf

id	ump-5837
recordtype	eprints
spelling	ump-58372018-07-26T06:55:23Z http://umpir.ump.edu.my/id/eprint/5837/ Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy Fakharuddin, Azhar Irfan, Ahmed Qamar, Wali Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose TK Electrical engineering. Electronics Nuclear engineering QC Physics A number of nanocrystalline, mesoporous large area (~0.2- 2 cm2) dye-sensitized solar cells (DSSCs) are probed by electrochemical impedance spectroscopy measurements to realize their carrier dynamics such as charge transport resistance (RCT), electron diffusion coefficient (Dη), and electron lifetime (τn) by applying an equivalent electrical model. The experimental upshots reveal that the electron lifetime relates with the device physical parameters which was neglected in previous studies. It is also found that the RCT relates negatively with the device area i.e. it decrease upon increasing photo-exposed area. The observed lowering of current density (JSC) over a series of experiments upon increasing the photoelectrode area is attributed to the decrease in RCT. The charge carriers upon injection into semiconductor layer find increased diffusion pathways and eventually recombine with the hole species when characterized by lower carrier lifetime. The thickness of the electrode film does not play an effective role indicating that the dynamics of larger area DSSCs differs largely from those of a single cell. The experimental results available indicate that a nearly complete collection of charge carriers is possible in large area modules provided the physical dimensions of photoelectrode area are considered. The results from the study hints future directions to build high efficiency DSSC modules and further asserts considering the diffusion length in two-dimensions while fabricating larger area cells. Trans Tech Publications, Switzerland 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/5837/1/fist-2014-azhar-scientific.pdf Fakharuddin, Azhar and Irfan, Ahmed and Qamar, Wali and Zulkeflee, Kalidin and M. M., Yusoff and Rajan, Jose (2014) Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy. Advanced Materials Research, 925. pp. 553-558. ISSN 1022-6680 (print), 1662-8985 (online) http://dx.doi.org/10.1016/j.proenv.2014.03.04910.4028/www.scientific.net/AMR.925.553 DOI: 10.1016/j.proenv.2014.03.04910.4028/www.scientific.net/AMR.925.553
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 QC Physics
spellingShingle	TK Electrical engineering. Electronics Nuclear engineering QC Physics Fakharuddin, Azhar Irfan, Ahmed Qamar, Wali Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy
description	A number of nanocrystalline, mesoporous large area (~0.2- 2 cm2) dye-sensitized solar cells (DSSCs) are probed by electrochemical impedance spectroscopy measurements to realize their carrier dynamics such as charge transport resistance (RCT), electron diffusion coefficient (Dη), and electron lifetime (τn) by applying an equivalent electrical model. The experimental upshots reveal that the electron lifetime relates with the device physical parameters which was neglected in previous studies. It is also found that the RCT relates negatively with the device area i.e. it decrease upon increasing photo-exposed area. The observed lowering of current density (JSC) over a series of experiments upon increasing the photoelectrode area is attributed to the decrease in RCT. The charge carriers upon injection into semiconductor layer find increased diffusion pathways and eventually recombine with the hole species when characterized by lower carrier lifetime. The thickness of the electrode film does not play an effective role indicating that the dynamics of larger area DSSCs differs largely from those of a single cell. The experimental results available indicate that a nearly complete collection of charge carriers is possible in large area modules provided the physical dimensions of photoelectrode area are considered. The results from the study hints future directions to build high efficiency DSSC modules and further asserts considering the diffusion length in two-dimensions while fabricating larger area cells.
format	Article
author	Fakharuddin, Azhar Irfan, Ahmed Qamar, Wali Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose
author_facet	Fakharuddin, Azhar Irfan, Ahmed Qamar, Wali Zulkeflee, Kalidin M. M., Yusoff Rajan, Jose
author_sort	Fakharuddin, Azhar
title	Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy
title_short	Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy
title_full	Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy
title_fullStr	Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy
title_full_unstemmed	Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy
title_sort	probing electron lifetime and recombination dynamics in large area dye-sensitized solar cells by electrochemical impedance spectroscopy
publisher	Trans Tech Publications, Switzerland
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/5837/ http://umpir.ump.edu.my/id/eprint/5837/ http://umpir.ump.edu.my/id/eprint/5837/ http://umpir.ump.edu.my/id/eprint/5837/1/fist-2014-azhar-scientific.pdf
first_indexed	2023-09-18T22:01:15Z
last_indexed	2023-09-18T22:01:15Z
_version_	1777414413313114112

Probing Electron Lifetime and Recombination Dynamics in Large Area Dye-Sensitized Solar Cells by Electrochemical Impedance Spectroscopy

Similar Items