| 초록 |
Cathode interfacial layer, phenylquinoline based, 10-ethyl-3,7-bis(4-phenylquinolin-2-yl)-10H-phenothiazine (PTDPQ) was introduced between the ZnO and active layer poly[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2- b:4,5-b’]dithiophene-2,6-diyl][3-fluoro-2-[(2- ethylhexyl)carbonyl] thieno[3,4-b]-thiophenediyl] (PTB7) and [6,6]-phenyl C71-butyric acid methyl ester (PC71BM) for the inverted solar cells and between LiF and PTB7: PC71BM for conventional organic solar cell devices. The interfacial layer (IL), PTDPQ enhances the device performance in both cases. From the different studies of the devices, it is analyzed that the charge recombination is suppressed and facilitates charge extraction due to the incorporation of the dual IL as accordance with observed improvement of the solar cell parameters. The devices with dual interfacial layers showed the higher electron mobility which matches with the higher fill factor and improved dark current. |
