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IJSTR >> Volume 9 - Issue 6, June 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Structural Interchange Of Mg And Zno In Mg Doped Zno At Different Temperatures And Its Influences In The Structural, Spectral, Morphological, Compositional And Optical Properties

[Full Text]

 

AUTHOR(S)

V.Saraswathi, R.Ramanathan, R.Ramasamy

 

KEYWORDS

Nitriding, Secondary phase, Match 3, red peak

 

ABSTRACT

Mg-doped ZnO were synthesized by the nitriding method at 500οC and 700οC. Morphological, compositional, structural and optical analysis has been studied for these temperatures. FTIR, SEM, EDAX, XRD, UV-Vis DRS spectrophotometry and PL studies were carried out for these samples. At 500οC, the XRD pattern shows extra peaks, which correspond to secondary phase. The extra peaks were not found in the XRD pattern at 700οC.Using Match 3 software, at 500οC, the MgO, which has a cubic structure changes its structure to the host structure, which was a hexagonal structure as ZnO and ZnO changes its structure to cubic structure, which is the structure of the dopant material. At 700οC the absence of extra peaks in the XRD pattern suggests that the MgO also has the structure of the host material, which is hexagonal structure, which is confirmed by the Match 3 software. PL spectra show that UV-emission band around 380-390 nm and blue emission peak for both the temperatures. Three peaks at389 nm, 466 nm and intense red emission at 641 nm was observed in the sample processed at 500οC. For the sample synthesized at 700οC, three peaks at 381 nm, 466 nm and weak peak at 557 nm were observed. The intense red peak observed for the sample processed at 500οC is attributed to the structural interchange of the dopant and the host materials.

 

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