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Energy & Environmental Science Vol - 5 Issue - 2

Energy & Environmental Science Vol -4

Energy & Environmental Science Vol -3

Energy & Environmental Science Vol -2

Energy & Environmental Science Vol -1

Influence of the counter electrode on the photovoltaic performance of dye-sensitized solar cells using a disulfide/thiolate redox electrolyte

Content Provider	Royal Society of Chemistry (RSC)
Author	Ahmad, Shahzada Brault, Vincent Zakeeruddin, Shaik M. Grätzel, Michael Nazeeruddin, Mohammad K. Breau, Livain Burschka, Julian Marsan, Benoît
Copyright Year	2012
Abstract	Strong scientific interests focus on the investigation of iodine-free redox couples for their application in dye-sensitized solar cells (DSCs). Recently, a disulfide/thiolate-based redox electrolyte has been proposed as a valuable alternative to the conventional I3−/I− system due to its transparent and non-corrosive nature. In the work presented herein, we systematically studied the influence of different counter electrode materials on the photovoltaic performance of DSCs employing this promising organic redox electrolyte. Our investigations focused on understanding the importance of electrocatalytic activity and surface area of the electroactive material on the counter electrode, comparing the conventional platinum to cobalt sulfide (CoS) and poly(3,4-ethylenedioxythiophene) (PEDOT). Electrochemical Impedance Spectroscopy has been used to study in detail the interfacial charge transfer reaction at the counter electrode. By using a high surface area PEDOT-based counter electrode, we finally achieved an unprecedented power conversion efficiency of 7.9% under simulated AM1.5G solar irradiation (100 mW cm−2) which, to the best of our knowledge, represents the highest efficiency that has so far been reported for an organic redox couple.
Starting Page	6089
Ending Page	6097
Page Count	9
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	5
Issue Number	3
Journal	Energy & Environmental Science
DOI	10.1039/c2ee03005e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Electrochemical Impedance Spectroscopy Redox Dye-sensitized solar cell Chalcogenide Electrolyte Electrode Cobalt sulfide Poly(3 4-ethylenedioxythiophene) Dielectric spectroscopy
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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