Figure 4
PL spectra of ZnO nanoparticles synthesized by the hydrolysis of ZnEt2 with different concentrations of PAAH (bottom curve: 0 wt% of PAAH; lower middle curve: 0.063 wt% of PAAH; higher middle curve: 0.63 wt% PAAH and top curve: 6.3 wt% of PAAH).
The plots are shifted along the y-axis for clarity.
