Figure 5

(a) Outer and (b) inner bending testing of ion-plated IWO/PET and sputtered ITO/PET samples with decreasing bending radius. The pictures on the right side show the outer and inner bending steps. In addition, the inset shows the tensile and compressive strains applied on the IWO films. (c) Dynamic outer and inner bending fatigue test results of ion-plated IWO/PET. (d) Surface FESEM images before and after 10,000 cycles of outer and inner bending of the ion-plated IWO/PET.