| 초록 |
The development of stable solid-state dye-sensitized solar cells (DSSCs) is desirable because of their intrinsic advantages. However, their energy conversion efficiency is very low compared to that corresponding to liquid state DSSCs. Thus, we employed oligomeric supramolecules containing double hydrogen bonding sites at both chain ends of the oligomer to improve the efficiency of solid state DSSCs. The oligomer was synthesized with poly(ethylene glycol) dimesylate (Mw=2000), pyrimethamine and glutaric acid, and utilized as a solvent to dissolve redox couples (I-/I3-). The solid polymer electrolyte of the composition [oligomer]:[1-methyl-3-propyl imidazolium iodide (MPII)]:[I2] = 20 : 1 : 0.19 resulted in the overall energy conversion efficiency of 3.36% at one sun condition (active area = 0.16 cm2, TiO2 layer thickness = 6 μm) |
