Photosensitizers Containing the 1,8-Naphthyridyl Moiety and Their Use in Dye-Sensitized Solar Cells
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- 作者：Ahmet Kukrek ; Dong Wang ; Yuanjun Hou ; Ruifa Zong ; Randolph Thummel
- 刊名：Inorganic Chemistry
- 出版年：2006
- 出版时间：December 11, 2006
- 年：2006
- 卷：45
- 期：25
- 页码：10131 - 10137
- 全文大小：182K
- 年卷期：v.45,no.25(December 11, 2006)
- ISSN：1520-510X
文摘
Using a Friedländer condensation approach, we prepared a series of 2-(pyrid-2'-yl)-1,8-naphthyridines containinga carboethoxy group appended at the 4- and 4'-positions. Complexation of these ligands with Ru(II) and NaNCSled to the complexes [Ru(L)2(NCS)2], and subsequent hydrolysis of the ester groups afforded the carboxylic aciddyes 13b-15b. The more delocalized and electronegative nature of the 1,8-naphthyridyl moiety lowers the energyof the ligand 
*-level and extends the absorption envelope of these complexes well into the red. The systemlacking a 4-carboxypyridine moiety shows poor absorbance in the blue region of the spectrum. Solar cells involvingthin films of anatase TiO2 impregnated with these dyes were prepared, and their photovoltaic performance wasevaluated. The incident photon-to-current efficiencies in the region beyond 625 nm were considerably greater thanthose of the prototype N3 dye.
*-level and extends the absorption envelope of these complexes well into the red. The systemlacking a 4-carboxypyridine moiety shows poor absorbance in the blue region of the spectrum. Solar cells involvingthin films of anatase TiO2 impregnated with these dyes were prepared, and their photovoltaic performance wasevaluated. The incident photon-to-current efficiencies in the region beyond 625 nm were considerably greater thanthose of the prototype N3 dye.