Figure 4: Deposition and optical properties of ZSO film.

(a) TEM (inset: high-resolution TEM) and (b) SAED pattern of ZSO NPs synthesized at 90 °C for 12 h (N2H4/Zn=8). (c) Plane view and cross-sectional SEM image of ZSO thin film (inset in Fig. 4c: high-magnification SEM image). (d) transmittance spectra of ZSO films on fused silica substrate with four coating times (inset: the photograph of ZSO colloidal solution and the resultant ZSO film). (e) The reflective index (n) and the extinction coefficient (k) of low-temperature processed ZSO film.