[Retracted] Influence of L-Tryptophan on Growth and Optical Properties of PbS Nanocrystalline Thin Films

Figure 12

Reflectance versus wavelength spectra from the ~200 to 1500 nm range of PbS-PbS-T films. The spectra of the PbS-T films show an absorbance decrease when compared to the PbS nanocrystals.