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Surface Morphology, Structural and Optical Properties of MgO Films Obtained by Spray Pyrolysis Technique

100%

Diachenko O., Opanasuyk A., Kurbatov D., Opanasuyk N., Kononov O., Nam D., Cheong H.

Acta Physica Polonica A

2016

vol. 130

issue 3

805-810

X-ray diffraction, atomic force microscopy, field emission scanning electron microscopy, UV-visible photometry, and photoluminescence measurements were used to investigate the surface morphology and structural and optical properties of MgO films. Magnesium oxide films deposited by the spray pyrolysis technique were studied. The substrate temperature was varied from T_{s} = 643 K to 693 K. Magnesium chloride hexahydrate (MgCl₂·6H₂O), dissolved in deionized water, was used as the precursor solution. It was established that the single phase films crystallize into a cubic structure with very fine crystallite size (about 2 nm). The optical band gaps of the samples were varied from 3.64 eV to 3.70 eV. Also, the films have a high level of transmittance of 90%. Photoluminescence spectra show the emission peaks at approximately 412 nm (3.00 eV) and 524 nm (2.38 eV). The peak with the energy of 3.00 eV is ascribed to holes trapped in magnesium ion vacancies acting as acceptors (F⁺ center). The broad emission peak at 524 nm is related to the presence of defects (F¯ centers) associated with oxygen ion vacancies.

Effect of Cu Negative Ion Implantation on Physical Properties of Zn_{1-x}Mn_xTe Films

84%

Pogrebnjak A., Shypylenko A., Amekura H., Takeda Y., Opanasyuk A., Kurbatov D., Kolotova I., Klymov O., Kozak C.

Acta Physica Polonica A

2013

vol. 123

issue 5

939-942

The paper deals with the investigations of structural properties of Zn_{1-x}Mn_xTe films, which were fabricated under various deposition conditions using the thermal evaporation method in a closed volume. The surface morphology of the samples was studied, the phase analysis of their structures was performed, the elemental analysis of the films and the crystal lattice constant were investigated. The texture perfection of the films before and after copper ion implantation was evaluated.

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2 Acta Physica Polonica A

1 2016

1 2013

2 Kurbatov D.

1 Amekura H.

1 Cheong H.

1 Diachenko O.

1 Klymov O.

1 Kolotova I.

1 Kononov O.

1 Kozak C.

1 Nam D.

1 Opanasuyk A.

1 Opanasuyk N.

1 Opanasyuk A.

1 Pogrebnjak A.

1 Shypylenko A.

1 Takeda Y.

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Surface Morphology, Structural and Optical Properties of MgO Films Obtained by Spray Pyrolysis Technique

Effect of Cu Negative Ion Implantation on Physical Properties of Zn_{1-x}Mn_xTe Films