標題: | Synthesis of metal-free organic dyes containing tris(dodecyloxy)phenyl and dithienothiophenyl units and a study of their mesomorphic and photovoltaic properties |
作者: | Shellaiah, Muthaiah Fang, Hsiao-Ping Lin, Yu-Ling Hsu, Ying-Chan Lin, Jiann-T'suen Lin, Hong-Cheu 材料科學與工程學系 Department of Materials Science and Engineering |
關鍵字: | 3,4,5-Tris(dodecyloxy)phenyl;Dye-sensitized solar cell;Dithienothiophene;Metal-free organic dye |
公開日期: | 4-三月-2013 |
摘要: | In this study we synthesized three metal-free organic dyes (Cpd11, Cpd16, and Cpd22) featuring 3,4,5-tris(dodecyloxy)phenyl and cyanoacrylic acid moieties as electron-donor and electron-acceptor/anchoring units, respectively, linked through various dithienothiophenyl conjugated spacers. Cpd16 exhibits mesomorphic properties, confirmed through polarizing optical microscopy, differential scanning calorimetly, and X-ray diffraction (XRD), due to the appropriate ratio of the lengths of its flexible chain to its rigid core. Molecular modeling of Cpd16, and its d-spacing determined from XRD data, verified the existence of a tilt angle in the SmC phase. Among these metal-free organic dyes, a dye-sensitized solar cell incorporating Cpd16 exhibited the best performance, presumably because of its better packing and its mesomorphic properties; the power conversion efficiency was 3.72% (V-oc=0.58 V; J(sc)=9.98 mA cm(-2); FF=0.65) under simulated AM 1.5 irradiation (100 mW cm(-2)). (c) 2013 Elsevier Ltd. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.tet.2013.01.009 http://hdl.handle.net/11536/21175 |
ISSN: | 0040-4020 |
DOI: | 10.1016/j.tet.2013.01.009 |
期刊: | TETRAHEDRON |
Volume: | 69 |
Issue: | 9 |
起始頁: | 2124 |
結束頁: | 2130 |
顯示於類別: | 期刊論文 |