Tunable Morphologies of Co²⁺-Doped Zno/Znal₂O₄ Composite Films Derived from Co²⁺-Substituted Layered Double Hydroxide Single Source Precursor

Abstract:

Co²⁺-doped ZnO/ZnAl₂O₄ composite films have been prepared by facile calcination of a single-source Co^IIZn^IIAl^III-layered double hydroxide (Co^IIZn^IIAl^III-LDH) precursor. The preparation was performed initially by cast aqueous precursor slurry on quartz glass substrate and subsequent transformation to a network-like film via calcination. The surface morphology and composition of the resulting films were characterized by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), and XPS analyses. The results clearly indicated that the as-deposited film is composed of Co²⁺-doped ZnO and ZnAl₂O₄, and also large ZnO single crystals are homogeneously incorporated into small ZnAl₂O₄ particle matrix. The influence of Co²⁺-doping concentration on microstructure and also on optical properties of the composite films was also investigated.

• Periodical: Advanced Materials Research (Volumes 455-456)
• Pages: 825-829
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.455-456.825
• Online since: January 2012
• Authors: Rui Yin, Lan Yang, Sai Long Xu
• Keywords: Co²⁺ Doping, LDH Precursor, ZnO/ZnAl₂O₄ Composite Film

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