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Structural and optical properties of nanoscale Galinobisuitite thin films.

Abd-Elkader OH, Deraz NM - Int J Mol Sci (2014)

Bottom Line: The films are very adherent to the substrates.The surface morphology and roughness of the films were studied using scanning electron microscopes (SEM), transmission electron microscopes (TEM) and stylus profilers respectively.The optical band gaps of the films were estimated from optical measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Zoology, Science College, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. omabdelkader7@ksu.edu.sa.

ABSTRACT
Galinobisuitite thin films of (Bi2S3)(PbS) were prepared using the chemical bath deposition technique (CBD). Thin films were prepared by a modified chemical deposition process by allowing the triethanolamine (TEA) complex of Bi(3+) and Pb(2+) to react with S(2)- ions, which are released slowly by the dissociation of the thiourea (TU) solution. The films are polycrystalline and the average crystallite size is 35 nm. The composition of the films was measured using the atomic absorption spectroscopy (AAS) technique. The films are very adherent to the substrates. The crystal structure of Galinobisuitite thin films was calculated by using the X-ray diffraction (XRD) technique. The surface morphology and roughness of the films were studied using scanning electron microscopes (SEM), transmission electron microscopes (TEM) and stylus profilers respectively. The optical band gaps of the films were estimated from optical measurements.

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Surface morphology of (Bi2S3)(PbS) thin films, (a) SEM; (b) TEM.
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f7-ijms-15-01842: Surface morphology of (Bi2S3)(PbS) thin films, (a) SEM; (b) TEM.

Mentions: The surface morphology of the (Bi2S3)(PbS) films is sensitive to compositions types, concentrations of the solutions mixtures, pH values, and both of the bath and annealing temperature These factors affect the structural morphology of the films [14]. Figure 7a shows that the small spherical nanograins, approximately 20–40 nm in size, were uniformly distributed over the smooth homogeneous background of the crystalline phase. The small grains are distributed rather distantly from each other, indicating the regular growth rate of the grains. Figure 7b shows the reduced grain density, indicating the noticeably smaller size of the grain. The RMS surface roughness is very slight.


Structural and optical properties of nanoscale Galinobisuitite thin films.

Abd-Elkader OH, Deraz NM - Int J Mol Sci (2014)

Surface morphology of (Bi2S3)(PbS) thin films, (a) SEM; (b) TEM.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3958824&req=5

f7-ijms-15-01842: Surface morphology of (Bi2S3)(PbS) thin films, (a) SEM; (b) TEM.
Mentions: The surface morphology of the (Bi2S3)(PbS) films is sensitive to compositions types, concentrations of the solutions mixtures, pH values, and both of the bath and annealing temperature These factors affect the structural morphology of the films [14]. Figure 7a shows that the small spherical nanograins, approximately 20–40 nm in size, were uniformly distributed over the smooth homogeneous background of the crystalline phase. The small grains are distributed rather distantly from each other, indicating the regular growth rate of the grains. Figure 7b shows the reduced grain density, indicating the noticeably smaller size of the grain. The RMS surface roughness is very slight.

Bottom Line: The films are very adherent to the substrates.The surface morphology and roughness of the films were studied using scanning electron microscopes (SEM), transmission electron microscopes (TEM) and stylus profilers respectively.The optical band gaps of the films were estimated from optical measurements.

View Article: PubMed Central - PubMed

Affiliation: Department of Zoology, Science College, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia. omabdelkader7@ksu.edu.sa.

ABSTRACT
Galinobisuitite thin films of (Bi2S3)(PbS) were prepared using the chemical bath deposition technique (CBD). Thin films were prepared by a modified chemical deposition process by allowing the triethanolamine (TEA) complex of Bi(3+) and Pb(2+) to react with S(2)- ions, which are released slowly by the dissociation of the thiourea (TU) solution. The films are polycrystalline and the average crystallite size is 35 nm. The composition of the films was measured using the atomic absorption spectroscopy (AAS) technique. The films are very adherent to the substrates. The crystal structure of Galinobisuitite thin films was calculated by using the X-ray diffraction (XRD) technique. The surface morphology and roughness of the films were studied using scanning electron microscopes (SEM), transmission electron microscopes (TEM) and stylus profilers respectively. The optical band gaps of the films were estimated from optical measurements.

Show MeSH
Related in: MedlinePlus