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Stable phase CdS nanoparticles for optoelectronics: a study on surface morphology, structural and optical characterization

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07 juin 2016
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Fig. 1

(a) original 2D SEM micrographs, ImageJ processed images (b) threshold image after eliminating noise (c) binary image for boundary distribution and (d) final image employed to measure particle size.
(a) original 2D SEM micrographs, ImageJ processed images (b) threshold image after eliminating noise (c) binary image for boundary distribution and (d) final image employed to measure particle size.

Fig. 2

FT-IR spectrum for CdS nanoparticles; the inset shows original CdS nanopowder.
FT-IR spectrum for CdS nanoparticles; the inset shows original CdS nanopowder.

Fig. 3

XRD spectrum for CdS nanoparticles.
XRD spectrum for CdS nanoparticles.

Fig. 4

W-H plot for CdS nanoparticles.
W-H plot for CdS nanoparticles.

Fig. 5

UV-Vis-NIR absorption spectrum; the inset shows specific energy range second derivative of absorption spectrum.
UV-Vis-NIR absorption spectrum; the inset shows specific energy range second derivative of absorption spectrum.

Structural parameters for CdS nanoparticles with corresponding standard values_

Observed valuesStandard valuesMiller planes
2θ [deg.]dhkl [Å ] Intensity 2θ [deg.] dhkl [Å ]Intensity
25.173.53560.7224.853.58259.21(1 0 0)
26.743.331100.0026.553.35742.68(0 0 2)
28.443.13579.9428.233.160100.00(1 0 1)
37.102.42113.7536.682.43925.83(1 0 2)
44.082.05343.9743.762.06845.25(1 1 0)
48.211.88624.4147.921.89245.29(1 0 3)
52.181.75139.2151.921.76115.27(1 1 2)