Dye–Sensitized Solar Cells: An Overview
Published Online: 15 DEC 2011
Copyright © 2011 John Wiley & Sons, Ltd. All rights reserved.
Encyclopedia of Inorganic and Bioinorganic Chemistry
How to Cite
Andrade, L., Ribeiro, H. A. and Mendes, A. 2011. Dye–Sensitized Solar Cells: An Overview. Encyclopedia of Inorganic and Bioinorganic Chemistry. .
- Published Online: 15 DEC 2011
Today, a particular interest in the development of alternative energy sources arises, especially motivated by the need of decreasing the dependency on fossil-fuel resources, and also for the prospect of reducing CO2 emissions. An attractive strategy to overcome the present energy problem is using renewable energy sources, such as the solar radiation, for producing clean energy. This article describes the main features of dye-sensitized solar cells (DSCs), explaining their structure and working principles, and highlighting the characteristics of the main materials for high-performance DSCs. After this brief discussion, the fundamentals behind electrochemical impedance spectroscopy (EIS) are described in order to allow the interpretation of the charge-transfer kinetics of the different phenomena occurring in a DSC under operation. A phenomenological model addressing the major charge-transfer mechanisms and energy losses is presented for a better understanding of the factors that limit the performance of DSCs. While a steady-state approach allows the construction of the current-voltage characteristics of the cell, the transient approach model is an invaluable tool to relate the phenomenological behavior with certain dynamic techniques, such as EIS.
- solar energy;
- dye-sensitized solar cells;
- electrochemical impedance spectroscopy;
- electrical analogs;
- modeling and simulation