A Quick Process for Synthesis of ZnO Nanoparticles with the Aid of Microwave Irradiation

Figure 11

Photoluminescence spectrum of ZnO nanoparticles (a) precipitated in the absence of surfactant (S2), and in the presence of PVP with different values of 𝑅: (b) 𝑅=1.2 (S7), (c) 𝑅=0.9 (S6), (d) 𝑅=0.6 (S5).