Figure 2From: Semitransparent inverted polymer solar cells employing a sol-gel-derived TiO2 electron-selective layer on FTO and MoO3/Ag/MoO3 transparent electrodeJ - V characteristics. J-V characteristics of device FTO/nc-TiO2/P3HT:PCBM/MoO3 (1 nm)/Ag (10 nm)/MoO3 (x nm) (x =20, 40, 60, and 80 nm) depending on the thickness of the MoO3 capping layer when illuminated from (a) the ITO side and (b) the MoO3/Ag/WO3 side.Back to article page