Imino-N-Heterocyclic Carbene and Imino-Pyridine Based Ruthenium Sensitizers for Dye-Sensitized Solar Cell Applications

• Main Authors: Ming-Tai Shen, 沈銘泰
• Other Authors: Wen-Ren Li
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/dvv3xx

碩士 === 國立中央大學 === 化學學系 === 101 === Novel imino-pyridine based ruthenium sensitizers IP102 and IP104 were designed and synthesized for application in dye-sensitized solar cells. Sensitizer IP102 showed the conversion efficiency (η) of 2.04% in which one of the thiocyanate ligand was positioned trans to the imine ligand while other trans to the bipyridine ligand. The sensitizer IP104 in which the imine ancillary ligand was substituted with phenyl group, the thiocyanate ligands attached to the ruthenium metal were found positioned opposite to each other. The electronic properties of sensitizer IP104 were close to that of N719 and exhibited overall conversion efficiency of 7.27 %, which was much higher than IP102 dye. In addition, new ruthenium complexes with a novel Imino-N-heterocyclic carbene ancillary ligand were also designed and synthesized for DSSC applications. These sensitizers named IC101 and IC102 were isolated as isomers of each other and exhibited different photophysical, electrochemical properties. Systematic comparison of two isomers as well as the mixture of both was performed and the dye IC101 and IC102 exhibited 6.32% and 6.59% conversion efficiency, respectively while mixture (IC101+ IC102) showed overall efficiency of 5.51%. The results obtained indicate that the single isomer can show better performance than that of mixture of complexes.