| 초록 |
Carbazole-based materials such as 4,4'-bis(N-carbazolyl)-2,2'-biphenyl (CBP) and its derivatives are frequently used as host materials in organic light emitting diodes with high hole mobility. This is due to its electron-rich property from two carbazolyl units. In this study, all solid-state DSSCs with 4,4'-bis(3-ethyl- N-carbazolyl)-1,1'-biphenyl (ethyl CBP) as a hole transporting material were fabricated, and their photovoltaic properties were investigated. When the ethyl CBP doped with 1-methyl-3-propylimidazolium iodide (MPII) and bis(trifluoromethane)sulfonimide lithium salt was used, a solid state DSSC showed a power conversion efficiency(PCE) of 0.453%, resulting from 0.998 mA/cm2 of the short-circuit current, 0.672 V of the open-circuit voltage and 67.50% of the fill factor. *Acknowledgements: This work is financially supported by the Ministry of Education, Science and Technology (MEST) through the fostering project of Industrial Complex Campus.
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