Abstract
Undoped ZnO nanowire arrays and Al-doped ZnO nanostructures with nanowires and nanosheets were successfully synthesized on a polyethylene terephthalate substrate using the rapid hydrothermal synthesis. These undoped ZnO nanowire arrays showed close alignment with highly c-axis oriented and well-defined hexagonal facets (001). The coexistence of the nanowires and nanosheets was observed during the introduction of Al ions. The number of nanosheets increased due to the Al doping concentration and the lack of surface energy. The diameter of the nanosheets and the length of nanowire arrays also increased as a function of the growth time. Room-temperature photoluminescence spectra show that the ZnO:Al nanostructures on the ZnO seeded polyethylene terephthalate substrate yield low level of the defect density compared to the ZnO seeded glass substrate to remove post annealing process.
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Acknowledgments
The authors thank the Clemson University Center for Optical Materials Science and Engineering Technologies (COMSET) and Samsung Advanced Institute of Technology (SAIT) in Samsung Electronics for financial support. The authors also thank Dr. H. Qian and Dr. J. S. Hudson of Clemson University Electron Microscope Facility for technical assistance and Dr. J. E. Harriss for the Microstructures Laboratory. The authors wish to acknowledge the editorial assistance of Mr. Godfrey Kimball of Clemson University.
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Shim, J.B., Kim, H.S., Chang, H. et al. Growth and optical properties of aluminum-doped zinc oxide nanostructures on flexible substrates in flexible electronics. J Mater Sci: Mater Electron 22, 1350–1356 (2011). https://doi.org/10.1007/s10854-011-0312-2
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DOI: https://doi.org/10.1007/s10854-011-0312-2