Formation of Conjugated Polymers Inside Nanospace

E. Kim, H. Shin, B. Kim, C. Park, T. Park
Yonsei University, KR

Keywords: conjugated polymers, solution cast polymerization, nanospace

Summary:

Using in situ solid state polymerization (isSSP) method, CPs were grown inside nanospace when the interplane distance between halogenated monomers were shorter than the average Vander Waals distance. As a highly hole conductive material, CPs grown inside nanopores of TiO¬2 could replace many hole conductors in organic photovoltaic cells. The specific stacking structure of monomer crystals inside nanospace of TiO¬2 allowed monomers to undergo a self-coupling reaction, leading to the formation of highly conductive CPs. This method was applied to the preparation of a CP based dye sensitized photovoltaic, which improved electrode/HTM interfacial properties originated from the close contact between the electrode and HTM. Importantly, this approach allowed deep penetration of CPs into a thick photoanode film, resulting in efficient dye adsorption and high photo conversion performance.