Journal
INORGANIC CHEMISTRY
Volume 49, Issue 18, Pages 8351-8357Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic1009658
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Funding
- WCU (the Ministry of Education and Science) [R31-2008-0001-10035-0]
- Ministry of Education, Science and Technology [2009-0082141]
- National Research Foundation of Korea [2009-0082141] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Two novel ruthenium sensitizers containing unsymmetrical indeno[1,2-1Athiophene or a fused dithiophene unit in the ancillary ligand have been designed and synthesized. The photovoltaic performance of JK-188 using an electrolyte consisting of 0.6 M 1,2-dimethy1-3-propylimidazolium iodide, 0.05 M12, 0.1 M Lil, 0.05 M guanidinium thiocyanate, and 0.5 M tert-butylpyridine in acetonitrile revealed a short-circuit photocurrent density of 18.60 mA/cm2, an open-circuit voltage of 0.72 V, and a fill factor of 0.71, yielding an overall conversion efficiency of 9.54%. The cell exhibits a remarkable stability under 1000 h of light soaking at 60 degrees C using a quasi-solid-state electrolyte consisting of 5 wt % poly(vinylidenefluoride-co-hexafluoropropylene), 0.6 M 1-propy1-2,3-dimethylimidazolium iodide, 0.5 M N-methylbenzimidazole, and 0.1 M 12 in 3-methoxypropionitrile, retaining 97% of the initial efficiency (7.38%).
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