Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 108, Issue -, Pages 70-77Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2012.08.008
Keywords
Dye-sensitized solar cells; Long-term stability; Co-adsorbent; Dye bath solvent
Funding
- National Science Council [NSC 101-2811-M-0089072, 101-2731-M-008-003-MY3]
- Bureau of Energy, Ministry of Economic Affairs, Taiwan, ROC
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The long-term stability of dye-sensitized solar cells (DSCs) based on an amphiphilic ruthenium sensitizer, CYC-B6L was studied. When the surface of the TiO2 electrode was passivated with a coadsorbent, chenodeoxycholic acid (CDCA), the resulting DSC reveals very good long-term stability with over 87% of initial performance under a 1000 h prolonged light-irradiation and thermal stress (60 degrees C) aging, which is as good as the state-of-the art robust device. The solvent used in dye bath also affects the long-term stability of the DSC devices. The effect of co-adsorbent and the impact of the dye bath solvents on the device durability were investigated using the electrochemical impedance spectroscopy. (C) 2012 Elsevier B.V. All rights reserved.
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