| 초록 |
Energy is global issue in these days, and solar energies are studied a lot. Polymer solar cells are made of polymers that have a D-A copolymer structure. D unit of the polymer is BenzoDiTionylThiophene(BDTT). A unit of polymer is Di-Fluorinated Phenazine. This study is the efficiency change according to switching of alkyl chain that one is linear alkyl chain (Dodecyl) the other is bulky alkyl chain(2-ethylhexyl, 2-butyloctyl). Among these 3 type of polymers, 2-Butyloctyl Di-Fluorinated Phenazine has best performance that 5.28% of PCE. The Dodecyl chain has high cohesive attraction. So it causes low dispersion. Also the polymer with ethyl-hexyl chain causes same problem. Butyloctyl has appropriate size of crystal to work in PSCs. |
