| 초록 |
Enormous efforts have been devoted to improving the power conversion efficiencies (PCEs) of dye-sensitized solar cells (DSCs). This study describes the preparation of a novel multifunctional polymer gel electrolyte in which a cross-linking polymerization reaction is used to encapsulate TiO2 nanoparticles toward improving PCEs and long-term stability of a quasi-solid state DSCs. A series of liquid junction DSCs was fabricated based on polymer membrane encapsulated dye-sensitized TiO2 nanoparticles, prepared using a surface-induced cross-linking polymerization reaction, to investigate the dependence of the solar cell performance on the encapsulating membrane layer thickness. The ion conductivity decreased as the membrane thickness increased; however, the long term-stability of the devices improved with increasing membrane thickness. The quasi-solid state DSC yielded a high PCEs (7.6 / 8.1%) and excellent stability during heating at 65’C over 30 days. |
