| 초록 |
Among organic materials, thermoelectric (TE) research have attracted considerable attention by its advantages of lightweight, low-cost, and flexible electricity generation modules, etc. Here, we synthesized new p-type polymers based on a backbone of 2-(5-phenylthiophen-2-yl)-5-(thiophen-2-yl)thiazolo[5,4-d]thiazole(PDTTz) having different side-chain, one with traditional normal alkyl chain and the other with PEG chains to study side-chain effects on doping level, and the electrical characteristics by solution immersion doping method. By introducing PEG side chain, we can expect high dopant receptive capacity and better intermolecular packing. We studied the electrical conductivity and the morphological changes of doped thin films. Polaron states observed by UV absorbance and the conductivity was studied by 2 point or 4 point probe methods. The detailed film morphology of the pristine and doped polymer films were investigated by atomic force microscopy (AFM). |
