The effect of annealing on structural and optical properties of α-Fe                         2                         O                         3                         /CdS/α-Fe                         2                         O                         3                          multilayer heterostructures

M. Saleem; S. M.A. Durrani; N. Saheb; M. F. Al-Kuhaili; I. A. Bakhtiari

doi:10.1016/j.apsusc.2014.09.117

The effect of annealing on structural and optical properties of α-Fe ₂ O ₃ /CdS/α-Fe ₂ O ₃ multilayer heterostructures

M. Saleem^*
, S. M.A. Durrani
, N. Saheb
, M. F. Al-Kuhaili
, I. A. Bakhtiari

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Multilayered thin film heterostructures of α-Fe ₂ O ₃ /CdS/α-Fe ₂ O ₃ were prepared through physical vapor deposition. Each α-Fe ₂ O ₃ layer was deposited by e-beam evaporation of iron in an oxygen atmosphere. The CdS layer was deposited by thermal evaporation in a vacuum. The effect of post annealing of multilayered thin films in air in the temperature range 250°C to 450°C was investigated. Structural characterization indicated the growth of the α-Fe ₂ O ₃ phase with a polycrystalline structure without any CdS crystalline phase. As-deposited multilayer heterostructures were amorphous and transformed into polycrystalline upon annealing. The surface modification of the films during annealing was revealed by scanning electron microscopy. Spectrophotometric measurements were used to determine the optical properties, including the transmittance, absorbance, and band gap. All the films had both direct as well as indirect band gaps.

Original language	English
Pages (from-to)	653-657
Number of pages	5
Journal	Applied Surface Science
Volume	320
DOIs	https://doi.org/10.1016/j.apsusc.2014.09.117
State	Published - 30 Nov 2014

Bibliographical note

Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.

Keywords

Absorbance
Annealing
CdS/α-Fe O multilayers
Composite films

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2014.09.117

Cite this

Saleem, M., Durrani, S. M. A., Saheb, N., Al-Kuhaili, M. F., & Bakhtiari, I. A. (2014). The effect of annealing on structural and optical properties of α-Fe ₂ O ₃ /CdS/α-Fe ₂ O ₃ multilayer heterostructures Applied Surface Science, 320, 653-657. https://doi.org/10.1016/j.apsusc.2014.09.117

Saleem, M. ; Durrani, S. M.A. ; Saheb, N. et al. / The effect of annealing on structural and optical properties of α-Fe ₂ O ₃ /CdS/α-Fe ₂ O ₃ multilayer heterostructures In: Applied Surface Science. 2014 ; Vol. 320. pp. 653-657.

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title = " The effect of annealing on structural and optical properties of α-Fe 2 O 3 /CdS/α-Fe 2 O 3 multilayer heterostructures ",

abstract = " Multilayered thin film heterostructures of α-Fe 2 O 3 /CdS/α-Fe 2 O 3 were prepared through physical vapor deposition. Each α-Fe 2 O 3 layer was deposited by e-beam evaporation of iron in an oxygen atmosphere. The CdS layer was deposited by thermal evaporation in a vacuum. The effect of post annealing of multilayered thin films in air in the temperature range 250°C to 450°C was investigated. Structural characterization indicated the growth of the α-Fe 2 O 3 phase with a polycrystalline structure without any CdS crystalline phase. As-deposited multilayer heterostructures were amorphous and transformed into polycrystalline upon annealing. The surface modification of the films during annealing was revealed by scanning electron microscopy. Spectrophotometric measurements were used to determine the optical properties, including the transmittance, absorbance, and band gap. All the films had both direct as well as indirect band gaps.",

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Saleem, M, Durrani, SMA, Saheb, N , Al-Kuhaili, MF & Bakhtiari, IA 2014, ' The effect of annealing on structural and optical properties of α-Fe ₂ O ₃ /CdS/α-Fe ₂ O ₃ multilayer heterostructures ', Applied Surface Science, vol. 320, pp. 653-657. https://doi.org/10.1016/j.apsusc.2014.09.117

The effect of annealing on structural and optical properties of α-Fe ₂ O ₃ /CdS/α-Fe ₂ O ₃ multilayer heterostructures . / Saleem, M.; Durrani, S. M.A.; Saheb, N. et al.
In: Applied Surface Science, Vol. 320, 30.11.2014, p. 653-657.

Research output: Contribution to journal › Article › peer-review

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AU - Saleem, M.

AU - Durrani, S. M.A.

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AU - Al-Kuhaili, M. F.

AU - Bakhtiari, I. A.

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N2 - Multilayered thin film heterostructures of α-Fe 2 O 3 /CdS/α-Fe 2 O 3 were prepared through physical vapor deposition. Each α-Fe 2 O 3 layer was deposited by e-beam evaporation of iron in an oxygen atmosphere. The CdS layer was deposited by thermal evaporation in a vacuum. The effect of post annealing of multilayered thin films in air in the temperature range 250°C to 450°C was investigated. Structural characterization indicated the growth of the α-Fe 2 O 3 phase with a polycrystalline structure without any CdS crystalline phase. As-deposited multilayer heterostructures were amorphous and transformed into polycrystalline upon annealing. The surface modification of the films during annealing was revealed by scanning electron microscopy. Spectrophotometric measurements were used to determine the optical properties, including the transmittance, absorbance, and band gap. All the films had both direct as well as indirect band gaps.

AB - Multilayered thin film heterostructures of α-Fe 2 O 3 /CdS/α-Fe 2 O 3 were prepared through physical vapor deposition. Each α-Fe 2 O 3 layer was deposited by e-beam evaporation of iron in an oxygen atmosphere. The CdS layer was deposited by thermal evaporation in a vacuum. The effect of post annealing of multilayered thin films in air in the temperature range 250°C to 450°C was investigated. Structural characterization indicated the growth of the α-Fe 2 O 3 phase with a polycrystalline structure without any CdS crystalline phase. As-deposited multilayer heterostructures were amorphous and transformed into polycrystalline upon annealing. The surface modification of the films during annealing was revealed by scanning electron microscopy. Spectrophotometric measurements were used to determine the optical properties, including the transmittance, absorbance, and band gap. All the films had both direct as well as indirect band gaps.

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Saleem M, Durrani SMA, Saheb N , Al-Kuhaili MF, Bakhtiari IA. The effect of annealing on structural and optical properties of α-Fe ₂ O ₃ /CdS/α-Fe ₂ O ₃ multilayer heterostructures Applied Surface Science. 2014 Nov 30;320:653-657. doi: 10.1016/j.apsusc.2014.09.117

The effect of annealing on structural and optical properties of α-Fe 2 O 3 /CdS/α-Fe 2 O 3 multilayer heterostructures