| 초록 |
In several reports, OFETs and OSCs were processed only by water and ethanol to increase eco-friendliness in fabrication process. Typical organic conducting materials can never be soluble in water and ethanol, however, by replacing hydrophobic chain of PPDT2FBT & PCBM into oligoethyleneglycol(OEG) side chain, active layer materials became soluble in polar solvents. However, OEG side chain can induce insulating effect, so it is important to optimize the total side chain length. Herein, we modified the spacer chain of alcohol-processable fullerenes. The effect of fullerene spacer chain in polar solvent has never been explored. To design eco-friendly organic electronic materials, we should realize about how the spacer chain affect the behavior of alcohol-soluble fullerene in water and ethanol. We investigated the crystallinity, solubility in water and ethanol, and the relationship between the spacer chain length and the efficiency of OSCs, and OFETs. |
