摘要
A series of polymer solar cells(PSCs) based on poly(diketopyrrolopyrrole-terthiophene)(PDPP3T) and[6,6]-phenyl-C71-butyric acid methyl ester(PC71BM) as active layer were fabricated to investigate the effect of 1,8-diiodooctane(DIO) on the performance of PSCs. The power conversion efficiency(PCE) of PSCs was increased from 3.77 % to 4.37 % for the cells with DIO additive. The underlying reason may be attributed to that DIO additive could make PC71 BM more dispersive in the active layer,forming a better bi-continuous interpenetrating network for excition dissociation and charge carrier transport. Therefore, the short circuit current density(JSC) and fill factor(FF) was increased from 8.25 to 9.18 mA/cm2and from67.2 % to 70.0 % for the PSCs with DIO additive compared with PSCs without DIO additive.
A series of polymer solar cells （PSCs） based on poly （diketopyrrolopyrrole-terthiophene） （PDPP3T） and [6,6]-phenyl-C71-butyric acid methyl ester （PC71BM） as active layer were fabricated to investigate the effect of 1,8- diiodooctane （DIO） on the performance of PSCs. The power conversion efficiency （PCE） of PSCs was increased from 3.77 % to 4.37 % for the cells with DIO additive. The underlying reason may be attributed to that DIO additive could make PC71BM more dispersive in the active layer, forming a better bicontinuous interpenetrating network for excition dissociation and charge carrier transport. There- fore, the short circuit current density （Jsc） and fill factor （FF） was increased from 8.25 to 9.18 mA/cm2 and from 67.2 % to 70.0 % for the PSCs with DIO additive compared with PSCs without DIO additive.
基金
supported by the Fundamental Research Funds for the Central Universities (2014YJS139)
