American Journal of Materials Science and Engineering
ISSN (Print): 2333-4665 ISSN (Online): 2333-4673 Website: Editor-in-chief: Dr. SRINIVASA VENKATESHAPPA CHIKKOL
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American Journal of Materials Science and Engineering. 2016, 4(2), 20-25
DOI: 10.12691/ajmse-4-2-1
Open AccessArticle

Influence of Growth Parameters on the Structural, Morphological and optical Properties of MgxZn1-xO Prepared by Metal Organic Chemical Vapor Deposition

K. Talla1, 2, , O. Sakho1, P. D. Tall1, C. B. Ndao1, E. H. O. Gueye1, M. B. Gaye1, J. K. Dangbegnon2, B. D. Ngom1, , J. R. Botha2 and A. C. Beye1

1Groupe de physique du Solide et Sciences des Matériaux, Faculté des Sciences et Techniques Université Cheikh Anta Diop de Dakar (UCAD), B.P. 25114 Dakar-Fann Dakar (Sénégal)

2Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth, 6031, South Africa

Pub. Date: January 03, 2017

Cite this paper:
K. Talla, O. Sakho, P. D. Tall, C. B. Ndao, E. H. O. Gueye, M. B. Gaye, J. K. Dangbegnon, B. D. Ngom, J. R. Botha and A. C. Beye. Influence of Growth Parameters on the Structural, Morphological and optical Properties of MgxZn1-xO Prepared by Metal Organic Chemical Vapor Deposition. American Journal of Materials Science and Engineering. 2016; 4(2):20-25. doi: 10.12691/ajmse-4-2-1


The influence of growth parameters on the structural, morphological and optical properties of MgxZn1-xO grown on sapphire substrate by metal organic chemical vapor deposition is studied. Pure oxygen gas is used as oxidant, bis-methyl-cyclopentadienyl magnesium ((MeCp)2Mg) and diethyl zinc are used as Mg and Zn source, respectively. The growth temperature between and 320°C and 620°C, the VI/II (O/Mg, Zn) ratio ranging from 60 to 960 and the growth rate from 0.5 to 3.3 m/h, are systematically varied to determine their effects upon the above mentioned physical properties. Structural, morphological and optical properties of the thin films are characterized by means of X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Photoluminescence (PL). Experimental results indicate that the growth conditions are essential for engineering the growth of MgxZn1-xO. The optimum substrate temperature is found to be 420°C for the growth of MgxZn1-xO with a solid composition x below 30%, composition above which a phase segregation has been previously observed. With increasing temperature, strong parasitic reaction between (MeCp)2Mg and oxygen is found to occur before they rich the substrate.

MgZnO ternary alloys MOCVD bis-methyl-cyclopentadienyl magnesium ((MeCp)2Mg) Columnar growth

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