NDLI: Charge storage and transfer in dye-sensitized solar cells: a study by electrochemical impedance spectroscopy

Content Provider	IEEE Xplore Digital Library
Author	The-Vinh Nguyen Dae-Jin Choi Hyun-Cheol Lee Ki-Ju Kim O-Bong Yang
Copyright Year	2005
Description	Author affiliation: Sch. of Environ. & Chem. Eng., Chonbuk Nat. Univ., Chonju, South Korea (The-Vinh Nguyen; Dae-Jin Choi; Hyun-Cheol Lee; Ki-Ju Kim; O-Bong Yang)
Abstract	AC impedance measurement was found as an efficient tool to elucidate the charge storage and transfer in dye-sensitized solar cells. The imaginary impedance of the apparent space charge region at the dye adsorbed TiO/sub 2//electrolyte interface was inversely dependent on the density of photoexcited electrons. For a given TiO/sub 2/ material, the thicker the thickness of the substrate, the higher the charge storage and the slower the charge transfer of the resulting DSC. Accordingly, the existence of an optimized thickness of TiO/sub 2/ substrate is inherent for the highest overall conversion efficiency of a DSC fabricated with a given TiO/sub 2/ material. The combination of the charge storage or the density of photoexcited electrons in the porous TiO/sub 2/ film and the prompt charge transfer between it and TiO/sub 2//TCO glass interface was worthwhile to note for improvement on the overall conversion efficiency of DSC.
Sponsorship	IEEE Electron Devices Soc. (USA)
Starting Page	167
Ending Page	170
File Size	799085
Page Count	4
File Format	PDF
ISBN	0780387074
ISSN	01608371
DOI	10.1109/PVSC.2005.1488097
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-01-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Photovoltaic cells Electrochemical impedance spectroscopy Substrates Glass Electrodes Electrons Crystallization Photoconductivity Circuits Impedance measurement
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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