Skip to main content
Figure 4 | Nanoscale Research Letters

Figure 4

From: Enhancement of polymer endurance to UV light by incorporation of semiconductor nanoparticles

Figure 4

The scheme of the UV-induced processes in the unloaded polymer (a, c) and CdS/PVA nanocomposite (b, d). (a) Untreated unloaded PVA. The zigzag lines serve to show the macromolecules in the polymer. (b) Untreated nanocomposite CdS/PVA. The circles denote CdS NPs in the polymeric matrix. (c) Formation of the UV-induced defects in the polymer. (d) Processes in CdS/PVA under UV illumination: I, direct absorption of UV light by NPs and further emission of PL quanta (the process is labeled PL) or thermal dissipation of energy via nonradiative process (the process is labeled NR); II, excitation transfer from photo-excited polymer macromolecules to NPs with further emission of PL quanta (the process is labeled PL) or thermal dissipation of energy (the process is labeled NR); III, the same process as in unloaded PVA: formation of the UV-induced defects in the matrix of nanocomposite.

Back to article page