Novel ruthenium sensitizer with multiple butadiene equivalent thienyls as conjugation on ancillary ligand for dye-sensitized solar cells |
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| Authors: | Thogiti Suresh Ganugula Rajkumar Surya Prakash Singh Paidi Yella Reddy Ashraful Islam Liyuan Han Malapaka Chandrasekharam |
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| Affiliation: | 1. Network of Institutes for Solar Energy, Inorganic & Physical Chemistry Division, CSIR – Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500 607, India;2. Aisin Cosmos R&D Co. Ltd., Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500 607, India;3. Photovoltaic Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan |
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| Abstract: | A heteroleptic polypyridyl ruthenium complex ‘cis-Ru(4,4′-bis(3,5-bis(5-hexylthiophen-2-yl)phenyl)-2,2′-bipyridine)(4,4′-dicarboxyl-2,2′-bipyridine) (NCS)2, MC102′, with a high molar extinction coefficient was synthesized and characterized with IR, 1H NMR, Mass, UV–Vis spectroscopy. The test cell DSSC devices constructed with 0.23 cm2 active area photo-electrode in combination with an electrolyte composed of 0.6 M dimethylpropyl-imidazolium iodide (DMPII), 0.05 M I2, and 0.1 M LiI in acetonitrile yielded solar to electric energy conversion efficiency (η) of 4.42% under Air Mass (AM) 1.5 sunlight, while the reference N719 sensitized solar cell fabricated and evaluated under similar conditions exhibited η-value of 5.84%. |
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| Keywords: | Dye sensitized solar cells Butadiene equivalent Thienyls Nano porous titanium dioxide Polypyridyl ruthenium complexes |
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