Efficient sensitization of nanocrystalline TiO2 films with high molar extinction coefficient ruthenium complex |
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| Authors: | Ke-Jian Jiang Jiang-bin Xia Shuji Noda |
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| Affiliation: | a Center for Advanced Science and Innovation, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
b Shimane Institute for Industrial Technology, Hokuryo-cho, Matsue, Shimane 690-0816, Japan |
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| Abstract: | A novel heteroleptic polypyridine ruthenium complex, cis-Ru(L1)(L2)(NCS)2, L1 = 4,4′-dicarboxylic acid-2,2′-bipyridine (dcbpy), L2 = 4,4′-bis[p-diethylamino]-α-styryl]-2,2′-bipyridine, was synthesized. The dye displays extremely high molar extinction coefficient, which is comparable with organic dye. Preliminary test shows the dye-sensitized TiO2 solar cell gives high conversion efficiency up to 8.65% under 1 Sun, while 8.35% is given for N3 based DSCs under the same condition. The dye will be further employed in solid state DSCs with hole transport material. |
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| Keywords: | Dye-sensitization Ruthenium complex π-conjugated |
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