Figure 5 | Scientific Reports

Figure 5

From: Enhancing photoluminescence of carbon quantum dots doped PVA films with randomly dispersed silica microspheres

Figure 5

Photos and SEM pictures of prepared PVA films. (a) film without microspheres; (b) film with silica microspheres of 0.86 \(\mu \)m diameter; (c) SEM picture of close packed microspheres, the sphere diameter is 0.3 \(\mu \)m; (d) SEM picture of microspheres aggregating at different places, the sphere diameter is 0.86 \(\mu \)m; (e) SEM picture of spheres aggregating in small groups, the sphere diameter is 1.7 \(\mu \)m.

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