Abstract (EN):
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 02009; W 022C5; m 45; 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.
Language:
English
Type (Professor's evaluation):
Scientific
Contact:
shaik.zakeer@epfl.ch