| 초록 |
Polymer-fullerene bulk heterojunction solar cells are gaining increasing importance, having unique advantages such as renewable, lightweight, flexibility, low cost and roll-to-roll process.[1] In this study, we designed conjugated polymers based on carbazole derivative and applied for donor material in active layer using PC71BM as acceptor. Designed donor-acceptor polymers by Suzuki polymerization, HS-5610, HS-5613 and HS-5614 are consisted of carbazole derivate as electron-donating unit and electron-accepting units. Electron-accepting units are thieno[3,4-c]pyrrole-4,6-dione (TPD), isoindigo (ID) and alkyl-2,20-bithiophene-3,30-dicarboximide (BTI) units for each polymers. The device including HS-5614 showed a PCE of 0.41% with a VOC of 0.65 V, a JSC of 2.04 mA/cm2, and a FF of 31.2%. These results suggested that synthesized polymers have a importance to act as donor material in active layer. [1] Su, Y.-W; Lan, S.-C.; Wei, K.-H. Organic photovoltaics. Mater. Today, 2012, 15, 554-562. |
