Rapid, Chemical-Free Generation of Optically Scattering Structures in Poly(ethylene terephthalate) Using a CO₂ Laser for Lightweight and Flexible Photovoltaic Applications

Figure 7

(a–d) Photographs showing the directional scattering caused by the laser-processed PET (b, d) relative to having no sample (a, c). The sample used for this image has a speed of 400 mm/s, a spacing of 400 μm, and a power of 20%. The average haze (400–750 nm) is 43.5%. The graph displays the measured haze of all 64 samples and demonstrates the range of haze values created. The dashed line in (e) is the AR sample.

(a)

(b)

(c)

(d)

(e)