DYE COVERAGE INFLUENCE ON THE CARRIER RECOMBINATION EVIDENCED BY ELECTROCHEMICAL IMPEDANCE SPECTRUM OF DSSC

作者：Scoicaru Laurentiu Octavian^*; Dascalu Constanta; Atasiei Ruxandra

来源：Polytechnical University of Bucharest Scientific Bulletin Series A- Applied Mathematics and Physics, 2014, 76(3): 275-282.

• Dye-sensitized solar cells
• mesoporous TiO2
• electrochemical Impedance Spectroscopy

As far as the efficiency of the dye-sensitized solar cells (DSSC) can be improved by both increasing the rate of the regeneration of the dyes and reducing the rate of recombination, a study of the electric charge transport processes at the interface dye covered photoanode/electrolyte was performed. Using the Electrochemical Impedance Spectroscopy (EIS) technique, the electric response of the DSSC was found to exhibit a significant dependence on the percentage of dye molecules adsorbed on the porous TiO2 electrode. The changes in the impedance spectra related to the dye uncovered suirface of the photoanode have been theoretically analysed.

• 出版日期2014