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http://dx.doi.org/10.5012/bkcs.2007.28.11.1973

Synthesis of Novel Organic Dyes Containing Coumarin Moiety for Solar Cell  

Choi, Hyun-Bong (Department of Chemistry, Korea University)
Baik, Chul (Department of Chemistry, Korea University)
Kim, Hyun-Jun (Department of Chemistry, Korea University)
Kim, Jeum-Jong (Department of Chemistry, Korea University)
Song, Ki-Hyung (Department of Chemistry, Korea National University of Education)
Kang, Sang-Ook (Department of Chemistry, Korea University)
Ko, Jae-Jung (Department of Chemistry, Korea University)
Publication Information
Bulletin of the Korean Chemical Society / v.28, no.11, 2007 , pp. 1973-1979 More about this Journal
Abstract
Novel organic dyes, JK-34, JK-35 and JK-36 containing bis-dimethylfluorenyl amino coumarin unit are designed and synthesized. Nanocrystalline TiO2 dye-sensitized solar cells were fabricated using these dyes. Under standard global AM 1.5 solar condition, the JK-34 sensitized cell gave a short circuit photocurrent density of 10.05 mA cm?2, open circuit voltage of 0.65 V, and a fill factor of 0.68, corresponding to an overall conversion efficiency η of 4.54%. We found that the power conversion efficiency was shown to be quite sensitive to the structural modifications of bridging thiophene moiety.
Keywords
Fluorenyl; Coumarin; Organic dyes; Solar cell;
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