Developing Conductive Highly Ordered Zinc Oxide Nanorods by Acetylacetonate-Assisted Growth
作者： Siti Shafura A Karim , Yuzuru Takamura , Phan Trong Tue , Nguyen Thanh Tung , Jamal Kazmi
DOI: 10.3390/MA13051136
关键词: Chemical engineering 、 Band gap 、 Zinc 、 Nanorod 、 Wurtzite crystal structure 、 Photoluminescence 、 Transmission electron microscopy 、 Hydrate 、 Hydrothermal circulation 、 Materials science
摘要: Highly ordered vertically grown zinc oxide nanorods (ZnO NRs) were synthesized on ZnO-coated SiO2/Si substrate using acetylacetonate hydrate as a precursor via simple hydrothermal method at 85 °C. We used 0.05 M of ZnO solution to facilitate the growth NRs and immersion time was varied from 0.5 4 h. The atomic force microscopy revealed surface roughness seed layer grow NRs. morphology observed by field emission scanning electron microscopy. X-ray diffraction examination transmission confirmed that structure highly crystalline with strong (002) peak corresponded hexagonal wurtzite structure. favorable due continuous supply Zn2+ ions chelating agents properties obtained acetylacetonate-derived during synthesis. Two-point probe current-voltage measurement UV-vis spectroscopy indicated resistivity optical bandgap value 0.44 Ω.cm 3.35 eV, respectively. photoluminescence spectrum showed broad centered 623 nm in visible region oxygen vacancies This study demonstrates precursors can be for production NRs-based devices potential application biosensors.
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