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Structural and Optical Properties of Nanostructured Fe-Doped SnO₂

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Saleh S., Ibrahim A., Mohamed S.

Acta Physica Polonica A

2016

vol. 129

issue 6

1220-1225

Nanocrystalline Sn_{1-x}Fe_xO₂ (where x = 0, 0.01, 0.02, 0.03 and 0.04) powders have been successfully synthesized by the hydrothermal method followed by sintering at 1000°C for 3 h. The morphology and structure of the samples have been analyzed by field emission scanning electron microscope and X-ray diffraction, respectively. X-ray diffraction results revealed that all diffraction peaks positions agree well with the reflection of a tetragonal rutile structure of SnO₂ phase without extra peaks. The formation of a tetragonal rutile structure of SnO₂ nanostructures was further supported by the Raman spectra. The band gap of Fe-doped SnO₂ nanoparticles was estimated from the diffuse reflectance spectra using the Kubelka-Munk function and it was decreasing slightly with the increase of Fe ion concentration from 3.59 to 3.52 eV. The variation in band gap is attributed predominantly to the lattice strain and particle size. The presence of chemical bonding was confirmed by the Fourier transform infrared spectra.

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1 Acta Physica Polonica A

1 2016

1 Ibrahim A.

1 Mohamed S.

1 Saleh S.

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Structural and Optical Properties of Nanostructured Fe-Doped SnO₂