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Organic dyes with oligo-n-hexylthiophene for dye-sensitized solar cells: Relation between chemical structure of donor and photovoltaic performance |
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| Authors: | Shingo Kajiyama Yu Uemura Hidetoshi MiuraKohjiro Hara Nagatoshi Koumura |
| Affiliation: | a Graduate School of Pure and Applied Science, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan b Chemicrea Inc., 2-1-6 Sengen, Tsukuba, Ibaraki 305-0047, Japan c National Institute of Advanced Industrial Science and Technology, Research Center for Photovoltaic Technology, 1-1-1 Higashi, Central 5, Tsukuba, Ibaraki 305-8565, Japan |
| Abstract: | Organic dyes with the oligohexylthiophene linkage having several donor parts, carbazole, indole, and indoline, were newly synthesized as sensitizers for dye-sensitized solar cells. The carbazole was most efficient donor moiety for DSSCs among these dyes with the oligothiophene linkage. Carbazole dyes were adsorbed with larger amount of molecules on the TiO2 film than both indole dyes and indoline dyes. Therefore, both the VOC and the electron lifetime of DSSCs with the carbazole dyes were highly observed. The decreasing of JSC of DSSCs with indole and indoline dyes also caused by the reducing the adsorption amount of dyes. |
| Keywords: | Dye-sensitized solar cells Organic dyes Oligo-n-hexylthiophene linkage Donor structures Electron lifetime Adsorption amount of dye |
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