| 초록 |
Triblock copolymers containing PAN (poly(acrylonitrile), poly(ethyleneglycol) and poly(acrylamide) derivatives were synthesized by RAFT polymerization for highly efficiency quasi-solid state dye-sensitized solar cells (DSSCs). The PAN has been widely used in the DSSC to create a quasi-solid state polymeric electrolyte. But, its solubility is not good enough to use as a gel-state electrolyte because of strong interaction between the molecules inside. In order to improve the solubility of PAN, we introduced two kinds of acrylamides for plasticizer into PAN-based triblock copolymers using RAFT polymerization and successfully dissolved the polymer in ACN to gelate the liquid electrolyte. We also take advantage of TiO2 nanoparticles (P25) owing to improve the ionic conductivity of the quasi-solid state electrolyte. The quasi-solid state DSSCs achieved comparable cell performance and better long-term stability, compared to the liquid state DSSCs. |
