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
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