Functionalized organic dyes containing a phenanthroimidazole donor for dye-sensitized solar cell applications |
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| Authors: | Woochul Lee Youna Yang Nara Cho Jaejung Ko Jong-In Hong |
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| Institution: | 1. Department of Chemistry, Seoul National University, Seoul 151-747, Republic of Korea;2. Department of New Material Chemistry, Korea University, Jochiwon, Chungnam 339-700, Republic of Korea |
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| Abstract: | Five functionalized organic dyes (H6-10) containing a phenanthroimidazole unit as an electron donor were synthesized and characterized for use in dye-sensitized solar cell (DSSC) applications. Under standard global AM 1.5 solar conditions, the DSSCs based on dye H6 displayed the best performance, with an incident photon-to-current conversion efficiency (IPCE) exceeding 70% at wavelengths of 400–530 nm, a short-circuit photocurrent density of 10.98 mA cm?2, an open-circuit voltage of 0.68 V, a fill factor of 0.69, and an overall conversion efficiency of 5.12%. This efficiency is ～94% of that for JK2 cells (5.46%) and ～72% of that for N719 cells (7.07%) under the same conditions. |
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