| 초록 |
We have prepared highly efficient and thermally stable organic solar cell using Iridium complex additive. The Hydroxyl group (–OH) functionalized main ligand is prepared by Suzuki coupling and reduction reaction. Synthesized Iridium complex additives form the hydrogen bond with the fluorine of active materials. Strong hydrogen bond between additive and active materials enhance the pi-pi stacking of active materials, freeze the morphology of active layer, and finally, thermal stability of devices are highly enhanced. In other hands, synthesized Iridium complex additive absorb the UV light region (300~400nm) strongly, and emit the Red light (600~700nm), which the active layer can strongly absorb (Energy transfer). The photovoltaic property of the prepared solar cell is measured under AM 1.5 G simulated light, as a result, we found that the overall conversion efficiency of device with iridium complex additive enhanced by energy transfer process. |
