| 초록 |
We synthesized thiophene-based monomers (bis-EDOTs) with different ethylene glycol side chain (EGO) lengths (TBO3, TBO4, and TBO5) and investigated their polymerization characteristics during in Situ photoelectrochemical polymerization (PEP). During the PEP reaction, the monomers were expected to diffuse toward neighboring dyes through the growing polymer layers to enable continuous chain growth. We found that the less steric hinderance monomer (TBO3) formed a more compact polymer layer. Its diffusion to the active sites through the resulting growing polymer layer was, therefore, limited. We deployed layers of the polymers (PTBO3, PTBO4, and PTBO5) in solar cells to investigate the lithium ion chelating properties of the polymers as a function of the number of oxygen atoms present in the EGOs. PTBO4 and PTBO5 were capable of chelating lithium ions, yielding a photovoltaic performance that was 142% of the performance obtained without the polymer layers (3.0 → 5.2%). |
