206380.fig.001a
(a)
206380.fig.001b
(b)
206380.fig.001c
(c)
206380.fig.001d
(d)
Figure 1: (a) Structure of a flexible organic solar cell. (b) Transmittance of PET and PI substrates with ITO layer. (c) Absorbance of P3HT:PCBM and P3HT:PCBM+N719. (d) Optical image of a flexible organic solar cell.