標題: | Enhanced photovoltaic performance by synergism of light-cultivation and electronic localization for highly efficient dye-sensitized solar cells |
作者: | Yin, Jen-Fu Bhattacharya, Dibyendu Hsu, Ying-Chan Tsai, Chen-Chuan Lu, Kuang-Lieh Lin, Hong-Cheu Chen, Jian-Ging Ho, Kuo-Chuan 材料科學與工程學系 Department of Materials Science and Engineering |
公開日期: | 2009 |
摘要: | Two ruthenium sensitizers, [Ru(dcbpy)(opip)(NCS)(2)] (JF-1, dcbpy 4,4'-dicarboxylic acid-2,2'-bipyridine, opip = 2-(4-octylphenyl)-1H-imidazo[4,5-f][1,10]phenanthroline) and [Ru(dcbpy)(otip)(NCS)(2)] (JF-2, otip = 2-(5-octylthiophen-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline), with unusually high power-conversion efficiency in comparison with other ruthenium complexes containing 1,10-phenanthroline-based ligands were designed. The power-conversion efficiency of JF-2 is 20% higher than that of JF-1, due to the modification of the ancillary ligand with a thiophene moiety. The origins of this device performance diversity are illustrated by photophysical properties, electrochemical data and density functional theory (DFT) studies. The greater device performance of JF-2 compared to JF-1 was caused from the broader MLCT distribution, the appropriate localization of the frontier orbitals and the stronger driving force of the charge injection and regeneration. |
URI: | http://hdl.handle.net/11536/7870 http://dx.doi.org/10.1039/b905103a |
ISSN: | 0959-9428 |
DOI: | 10.1039/b905103a |
期刊: | JOURNAL OF MATERIALS CHEMISTRY |
Volume: | 19 |
Issue: | 38 |
起始頁: | 7036 |
結束頁: | 7042 |
顯示於類別: | 期刊論文 |