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

Figure 4

AFM II-D images for (a) PbS (b) PbS-T5 and (c) PbST10, (d) PbS-T20, and (e) PbS-T30 nanocrystals. Significant morphological changes are observed when compared to each other.

(a)

(b)

(c)

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(e)