Effect of the substrate on the properties of ZnO-MgO thin films grown by atmospheric pressure metal-organic chemical vapor deposition
Por:
Torres-Huerta A.M., Domínguez-Crespo M.A., Brachetti-Sibaja S.B., Arenas-Alatorre J., Rodríguez-Pulido A.
Publicada:
1 jul 2011
Resumen:
The ZnO-MgO alloys possess attractive properties for possible applications in optoelectronic and display devices: however, the optical properties are strongly dependent on the deposition parameters. In this work, the effect of the glassy and metallic substrates on the structural, morphological and optical properties of ZnO-MgO thin films using atmospheric pressure metal-organic chemical vapor deposition was investigated at relatively low deposition temperature, 500 degrees C. Magnesium and zinc acetylacetonates were used as the metalorganic source. X-ray diffraction experiments provided evidence that the kind of substrates cause a deviation of c-axis lattice constant due to the constitution of a oxide mixture (ZnO and MgO) in combination with different intermetallic compounds(Mg2Zn11 and Mg4Zn7) in the growth films. The substitutional and interstitial sites of Mg2+ instead of Zn2+ ions in the lattice are the most probable mechanism to form intermetallic compounds. The optical parameter
Filiaciones:
Torres-Huerta A.M.:
Instituto Politécnico Nacional, Grupo de Ingeniería en Procesamiento de Materiales CICATA-IPN, Unidad Altamira, km 14.5, C. P. 89600, Altamira, Tamps, Mexico
Domínguez-Crespo M.A.:
Instituto Politécnico Nacional, Grupo de Ingeniería en Procesamiento de Materiales CICATA-IPN, Unidad Altamira, km 14.5, C. P. 89600, Altamira, Tamps, Mexico
Brachetti-Sibaja S.B.:
Alumna Del Postgrado en Tecnología Avanzada Del CICATA-IPN, Unidad Altamira IPN, Carretera Tampico-Puerto Industrial Altamira, km 14.5, C. P. 89600, Altamira, Tamps, Mexico
Arenas-Alatorre J.:
Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
Rodríguez-Pulido A.:
Unidad Profesional Adolfo López Mateos, Luis Enrique Erro s/n, 07738, D. F., Mexico, Mexico
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