Thiocyanate-Free Cycloruthenated Sensitizers for Dye-Sensitized Solar Cells

• Main Authors: Nguyen The Duy, 阮帝暉
• Other Authors: Chun-Guey Wu
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/uhtu42

博士 === 國立中央大學 === 化學學系 === 107 === This work described the synthesis and dye-sensitized solar cell (DSC) applications of fourteen thiocyanate-free complexes (DUY1 ~ DUY6, DUY24-O, DUY24-Se, DUY24 ~ DUY29) containing six- or five-membered rings as cyclometalated segments. The study of DUY1 ~ DUY6 showed that the sensitizers containing meta-CF3 group reveal a more favorable distribution of beta-lowest unoccupied spin orbital (beta-LUSO) for the stronger interaction with the reductant (iodide ion) in the electrolyte which promotes the dye regeneration compared to ortho-CF3. The photovoltaic performances of DUY24-O, DUY24, and DUY24-Se sensitized cells showed that a higher VOC was obtained when a softer chalcogen is present in the dye molecule. DUY24 ~ DUY29-based cells showed up-to-65% higher efficiencies than the cell based on reported sensitizers containing 2-thienylpyridine cycloruthenated ligands (NC103 dye).