| 초록 |
Nowadays, a great deal of research work has been focusing on searching for efficient solid-state hole transporting materials to replace redox mediators in liquid electrolytes. In this study, all solid-state DSSCs with 3,3'',6,6''-tetrakis(1,1-dimethylethyl)-9'-ethyl-9,3':6',9''-ter-9H-carbazole (TBu-TCz) as a hole transporting material were fabricated, and their photovoltaic properties were investigated. When the TBu-TCz doped with 1-methyl-3-propylimidazolium iodide (MPII) was used, a solid state DSSC showed a power conversion efficiency(PCE) of 0.974%, resulting from 2.224 mA/cm2 of the short-circuit current (Jsc), 0.626 V of the open-circuit voltage (Voc) and 69.98% of fill factor (FF). On the other hand, a device, in which the TBu-TCz was doped with both MPII and bis(trifluoromethane)sulfonimide lithium salt, showed a photovoltaic performance of 3.764 mA/cm2 for the Jsc, 0.606 V for the Voc, and 69.95% for the FF, which led to a PCE of 1.595%. |
