Figure 7
From: Inkjet printing of NiO films and integration as hole transporting layers in polymer solar cells

(a) The geometry of the electrode and (b) configuration of the OSC device (dotted square represent the device area(3 × 3mm2) while the glass substrate was of size 1.0 inch2); (c) Dark and (d) light J-V characteristics of P3HT:PC60BM organic solar cell devices fabricated on inkjet printed NiO hole transport layers, heat treated at various temperatures.