Research Article

Characterization of the Organic Thin Film Solar Cells with Active Layers of PTB7/PC71BM Prepared by Using Solvent Mixtures with Different Additives

Figure 2

Schematics of the (a) energy band structure of the OTFSC with hole transfer layer of PEDOT:PSS and blended active layer of PTB7:PC71BM and (b) cross section view of OTFSC device.
694541.fig.002a
(a)
694541.fig.002b
(b)