Fig. 1. UVO treatment device for flexible substrates

Fig. 2. Infrared spectral measurement of flexible substrates

Fig. 3. Near-infrared spectra of flexible substrates
(a): PDMS; (b): PEN; (c): PET; (d): PI

Fig. 4. The change curve of contact angle

Fig. 5. Test results of contact angles of flexible substrates under different time lengths of ozone UV treatment

Fig. 6. Mechanism analysis of ozone UV treatment on flexible substrate