Figure 4From: Efficient Performance of Electrostatic Spray-Deposited TiO2 Blocking Layers in Dye-Sensitized Solar Cells after Swift Heavy Ion Beam IrradiationCross-sectional FE-SEM images of a bare FTO substrate, b pristine TiO 2 /FTO, and c O 2 ion-irradiated TiO 2 /FTO. The thickness of the pristine and irradiated TiO2 was about 1.1 and 0.67 μm, respectively. (Inset: images in 100 nm scale.)Back to article page