Enhanced Structural and Luminescent Properties of Carbon-Assisted ZnO Nanorod Arrays on (100) Si Substrate
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We have fabricated as-grown ZnO nanorods (NRs) and carbon-assisted NR arrays on semi-insulating (100)-oriented Si substrates. We compared the structural and luminescent properties of them. High-resolution transmission microscopy, field emission scanning electron microscopy, x-ray diffraction and energy-dispersive x-ray revealed that the as-grown ZnO NRs and carbon-assisted ZnO NRs were single crystals with a hexagonal wurtzite structure, and grew with a c-axis orientation perpendicular to the Si substrate. These measurements show that the carbon-assisted ZnO NRs were better synthesized vertically on an Si substrate compared to the as-grown ZnO NRs. Photoluminescence measurements showed that luminescence intensity of the carbon-assisted ZnO NRs was enhanced compared to the as-grown ZnO NRs. The enhanced luminescence intensity of the carbon-assisted ZnO demonstrates the possible improvement in the performance of photovoltaic nanodevices based on ZnO-like materials. This method can be applied to the fabrication of well-aligned ZnO NRs used widely in optoelectronic devices.
KeywordsZnO nanorods single crystal chemical vapor deposition luminescence
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- 1.X. Fang, J. Li, D. Zhao, D. Shen, B. Li, and X. Wang, J. Mater. Chem. C 113, 21208 (2009).Google Scholar
- 3.J. Lu, Z. Shi, Y. Wang, Y. Lin, Q. Zhu, Z. Tian, J. Dai, S. Wang, and C. Xu, Sci. Rep. 6, Article number: 25645 (2016).Google Scholar
- 7.J.C. Johnson, H.Q. Yan, P.D. Yang, and R.J. Saykally, J. Mater. Chem. B 107, 8816 (2003).Google Scholar
- 34.C. Jaqadish and S.J. Pearton, Zinc Oxide Bulk, Thin Films and Nanostructures: Processing, Properties and Applications. (Oxford: Elsevier, 2006).Google Scholar