| Popis: |
Microwave was applied to improve the efficiency of polymer solar cell based on poly(3-hexylthiophene)(P3HT) and -phenyl-C61-buytyric acid methyl ester(PCBM) bulk-heterojunction solar cells.With microwave radiation(2.45 GHz) for 10 min,short circuit current of 9.13 mA/cm2,open circuit voltage of 0.63 V,and energy conversion efficiency of 3.21% were obtained,similar or surpass to those of devices annealed with a hot plate for 20 min at 150 ℃.We examined the effect of microwave on the active layer.From the Uv-Vis absorption spectrum and the SEM image after microwave,we found that more rough morphology and larger phase separation occurred,which benefit for dissociation of exciton and transportation of carrier. |
