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Structural and Optical Characterization of ZnO Nanofilms Deposited by CBD-AμW

Published online by Cambridge University Press:  11 May 2015

J. Díaz-Reyes ,
R. S. Castillo-Ojeda ,
J. E. Flores-Mena  and
J. Martínez-Juárez
J. Díaz-Reyes*
Affiliation:
Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional. Ex–Hacienda de San Juan Molino. Km. 1.5. Tepetitla, Tlaxcala. 90700. México.
R. S. Castillo-Ojeda
Affiliation:
Universidad Politécnica de Pachuca. Km. 20, Rancho Luna, Ex-Hacienda de Santa Bárbara, Municipio de Zempoala, Hidalgo. 43830. México.
J. E. Flores-Mena
Affiliation:
Facultad de Ciencias de la Electrónica, Benemérita Universidad Autónoma de Puebla. 18 Sur y San Claudio S/N, Ciudad Universitaria. Col. San Manuel. Puebla, Puebla. 72570. México.
J. Martínez-Juárez
Affiliation:
CIDS-ICUAP, Benemérita Universidad Autónoma de Puebla. 14 Sur y San Claudio S/N, CU. Edif. No. 137. Col. San Manuel. Puebla, Puebla. 72570. México.
*
* E-mail: joel_diaz_reyes@hotmail.com
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Abstract

ZnO was grown by Chemical Bath Deposition technique activated by microwaves (CBD-AμW) on corning glass substrates. The ZnO structural and optical properties are studied as a function of the urea concentration in the growth solution. ZnO chemical stoichiometry was determined by Energy-dispersive X-ray spectroscopy (EDS). The XRD analysis and Raman scattering reveal that ZnO deposited thin films showed hexagonal polycrystalline phase wurtzite type. The Raman spectra present four main peaks associated to the modes E2high, (E2high-E2low), E2low and an unidentified vibrational band observed at 444, 338, 104 and 78 cm-1. The E2low mode involves mainly Zn atoms motion in the unit cell and the E2high mode is associated to oxygen motion. The observed emission peaks in the room temperature photoluminescence spectra are associated at vacancies of zinc and oxygen in the lattice.

Keywords

StructuralOpticalX-ray diffraction (XRD)X-ray spectroscopyoptoelectronic
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1766: Symposium 5B – Structural and Chemical Characterization of Metals, Alloys, and Compounds—2014 , 2015 , pp. 151 - 158
Copyright
Copyright © Materials Research Society 2015 

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