Influence of Different Cations of 
                        N3 Dyes on Their Photovoltaic Performance and Stability

Luísa Andrade; Shaik M. Zakeeruddin; Mohammad K. Nazeeruddin; Helena Aguilar Ribeiro; Adélio Mendes; Michael Graetzel

doi:10.1155/2009/563420

International Journal of Chemical Engineering (Jan 2009)

Influence of Different Cations of N3 Dyes on Their Photovoltaic Performance and Stability

Luísa Andrade,
Shaik M. Zakeeruddin,
Mohammad K. Nazeeruddin,
Helena Aguilar Ribeiro,
Adélio Mendes,
Michael Graetzel

Affiliations

Luísa Andrade: Laboratory for Process, Environment and Energy Engineering (LEPAE), Department of Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Shaik M. Zakeeruddin: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Swiss Federal Institute of Technology, 1015 Lausanne, Switzerland
Mohammad K. Nazeeruddin: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Swiss Federal Institute of Technology, 1015 Lausanne, Switzerland
Helena Aguilar Ribeiro: Laboratory for Process, Environment and Energy Engineering (LEPAE), Department of Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Adélio Mendes: Laboratory for Process, Environment and Energy Engineering (LEPAE), Department of Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Michael Graetzel: Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, Swiss Federal Institute of Technology, 1015 Lausanne, Switzerland

DOI: https://doi.org/10.1155/2009/563420
Journal volume & issue: Vol. 2009

Abstract

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The N3 dye was modified by substituting two of its protons by potassium or sodium cations. The performance and stability of dye-sensitized solar cells incorporating the new dyes were evaluated under light soaking (1000 W⋅m-2) at 50∘C. Photocurrent measurements demonstrated that proton substitution by potassium cations rends the system more stable. Further characterization of the potassium-based devices was performed by electrochemical impedance spectroscopy to investigate the charge-transfer phenomena occurring at the different interfaces of the cells.

Published in International Journal of Chemical Engineering

ISSN: 1687-806X (Print); 1687-8078 (Online)
Publisher: Wiley
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Chemical engineering
Website: https://onlinelibrary.wiley.com/journal/8293

About the journal