fig4
Figure 4. (A) The DRS spectra of ZnS NPs and the inset indicate the Eopt of the Tauc’s evaluation from the curve of (αhν)2vs. (hν) for S1, S2 and S3; (B) XRD patterns of the wurtzite and zinc blend crystallite phases of the ZnS synthesized NPs; (C) Variation of the lattice strain with the optical band gap which is determined from DRS and the Urbach energy. Copyright 2023, IOPScience[46]. DRS: Diffuse reflectance spectroscopy; ZnS: Zinc sulfide; NP: nanoparticles; XRD: X-ray diffraction.
