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Lu S.,Zhejiang University of Science and Technology | Geng R.,Zhejiang University of Science and Technology | Geng R.,Zhejiang University of Technology | Wu T.,Zhejiang Wynca Chemical Group Co. | Ren B.,Zhejiang Wynca Chemical Group Co.
Synthetic Metals | Year: 2013

A new sensitizer, Ru(2,2′-bipyridine-4,4′-dicarboxylic acid)-4,4′-bis(2-(2,4,6-tri-methoxyphenyl)ethenyl)-2,2′-bipyridine) (NCS)2, denoted K77-3, was synthesized. The UV-vis spectrum of K77-3 was characterized. Dye sensitized solar cells (DSSC) based on liquid electrolyte and cyanoacrylate gel electrolyte were fabricated and devices J/V curves were measured. The effects of co-adsorbent chenodeoxycholic acid (CDCA), weight content of cyanoacrylate and cross linking polymer gel network on device efficiency were discussed. Under solar illumination of 100 mW cm -2(A.M. 1.5), the optimized liquid and quasi-solid-state devices efficiency of 8.21% and 5.93% were obtained, respectively. The long term stability is also presented. © 2013 Elsevier B.V.


Lu S.,Zhejiang University of Science and Technology | Zeng L.,Zhejiang University of Science and Technology | Wu T.,Zhejiang Wynca Chemical Group Co. | Ren B.,Zhejiang Wynca Chemical Group Co. | And 4 more authors.
Solar Energy | Year: 2011

Efficient hybrid solar cells fabricated from TiO2, novel carboxylated polythiophene poly (3-thiophenemalonic acid) P3TMA as sensitizer as well as hole conductor and poly (3-hexylthiophene) (P3HT) as hole transporter was described. UV-Vis absorption and morphology of the active layer were investigated. Device J/V characterizations with different P3HT layer thickness were measured and discussed. Efficiency improvements were observed in thinner P3HT layer thickness and with poly[3,4-(ethylenedioxy)-thiophene]:poly(styrene sulfonate) (PEDOT:PSS) as charge collection layer, and such device showed a short-circuit current density of 1.32mA/cm2, an open-circuit voltage of 0.44V, a fill factor of 0.43, and a energy conversion efficiency of 0.25% at A.M. 1.5 solar illumination (100mW/cm2). © 2011 Elsevier Ltd.


Lu S.,Zhejiang University of Science and Technology | Wu T.,Zhejiang Wynca Chemical Group Co. | Ren B.,Zhejiang Wynca Chemical Group Co. | Geng R.,Zhejiang University of Science and Technology | Geng R.,Zhejiang University of Technology
Journal of Materials Science: Materials in Electronics | Year: 2013

A new sensitizer, Ru(2,2′-bipyridine-4,4′-dicarboxylic acid)-4,4′-bis(2-(4-N,N′-diphenylaminophenyl)ethenyl)-2, 2′-bipyridine) (NCS)2, denoted K77-7, was synthesized. The UV-vis spectrum of K77-7 was characterized. Dye sensitized solar cells (DSSC) based on K77-7 were fabricated and devices J/V curves were measured. The effects of co-adsorbent chenodeoxycholic acid, solvent in electrolyte, TiO2 light scattering layer, and treatment of TiCl4 aqueous solution on device efficiency were discussed. Under solar illumination of 100 mW cm -2 (A.M. 1.5), the optimized DSSC device efficiency of 10.1 % was obtained. © 2013 Springer Science+Business Media New York.

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