Influence of the DEA Concentration on Structural and Optical Properties of Nanodot PbS Thin Films Growth by Chemical Solution Deposition: Unveiling Dual Optical Absorption Edges

Figure 5

Optical absorbance (a) and transmittance (b) versus wavelength of the PbS-QDs thin films deposited at different concentrations of DEA as complexing agent onto glass substrate. Insets of (a): magnification of the absorption range of 2,600–3300. Insets of (b): the photographs of the PbS layers.

(a)

(b)