Byrne, Sarah (2003) Raman spectroscopy and x-ray diffraction studies of zinc oxide grown by pulsed laser deposition. Master of Science thesis, Dublin City University.
Abstract
This work reports on the results of a spectroscopic study of Zinc Oxide (ZnO) and manganese doped Zinc Oxide (Zno87Mno.nO). The samples were grown using Pulsed Laser Deposition (PLD) and were analysed as a function of their anneal conditions.
As a wide band gap semiconductor, ZnO, when grown to high quality, has the potential to be used in the fabrication o f short wavelength devices i.e. LED ’s, laser diodes and lasers. In order to investigate the quality o f the samples X-ray diffraction (XRD) and Raman spectroscopy were employed. These tools gave insight into the crystal structure quality, including the grain size, the lattice parameters and the presence o f surface electric fields. The two probing techniques, Raman spectroscopy and X-ray diffraction, complemented each other well and there was a good correlation between the results they produced.
A preliminary study o f Zno.g7Mno.13O was also carried out using Raman and XRD. The material grown was shown to be of reasonable quality. Since Mn doping increases the bandgap of ZnO, Zn(i_x)MnxO, has the potential to emit even shorter wavelength radiation. Transition metal doped semiconductors are also being investigated for use in the area of Spintronics. Zn(i.x>MnxO is not yet widely studied so there is scope for further fundamental Raman spectroscopy studies.
A paper containing the non-resonant Raman and XRD results of the zinc oxide samples has been submitted to the journal Thin Solid Films.
Metadata
Item Type: | Thesis (Master of Science) |
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Date of Award: | 2003 |
Refereed: | No |
Supervisor(s): | McGlynn, Enda |
Uncontrolled Keywords: | Zinc Oxide; ZnO; Pulsed Laser Deposition; PLD; crystal structure quality; surface electric fields |
Subjects: | Physical Sciences > Semiconductors |
DCU Faculties and Centres: | DCU Faculties and Schools > Faculty of Science and Health > School of Physical Sciences |
Use License: | This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License |
ID Code: | 17410 |
Deposited On: | 06 Sep 2012 11:07 by Fran Callaghan . Last Modified 19 Jul 2018 14:57 |
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