| 초록 |
We prepare dye-sensitized solar cells (DSSCs) fabricated with poly(ethylene glycol) (PEG)-based polymer gel electrolyte (PGE) which is incorporated with surface carbon shell-functionalized ZrO2 nanoparticles (ZrO2-C NPs) as a nanofiller (NF). The surface polymerized ZrO2 NPs with a hydrophilic polymer, poly(ethylene glycol) methyl ether methacrylate (POEM) (ZrO2-POEM) via atom transfer radical polymerization (ATRP), are scaffold to prepare the ZrO2-C through thermal carbonization process. The power conversion efficiency (η) of DSSC with 12 wt% ZrO2-C PGE is 5.6 % which is higher than pure PGE (4.4 %), 12 wt % ZrO2-POEM (4.7 %), and 12 wt % ZrO2 PGE (4.8 %). The Lewis acid-base interactions of ZrO2-C and PEG polymer reduce the crystallinity and enhance the ion conductivity. Furthermore, the catalytic effect of the carbon shell of ZrO2-C NPs decrease the interfacial resistance and creates electron path upon contact with the counter electrode, enhancing the charge transfer rate. |
