Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method
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WILEY-VCH Verlag GmbH & Co.
2012
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my.unimap-200062012-06-19T13:43:18Z Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method Mohammad, Kashif Syed Muhammad, Usman Ali Mohamed A, Mohd Ali Abdulgafour, H. I. Uda, Hashim, Prof. Dr. Willander, Magnus Zainuriah, Hassan uda@unimap.edu.my Phonon redshift Precursor and seed solution Sol-gel ZnO nanoflakes structures Link to publisher's homepage at http://onlinelibrary.wiley.com Two-dimensional (2D) ZnO nanoflakes were grown on thin aluminum layer, deposited on silicon substrate, using a sol-gel method. The surface morphologies of ZnO nanoflakes at different precursor concentrations were studied using scanning electron microscopy (SEM). Combined studies of SEM, photoluminescence (PL), and Raman spectroscopy suggested that nanorods started to grow along with nanoflakes at a precursor concentration of 0.05 M and the density of the nanorods significantly increased when the concentration was raised to 0.075 M. Both the UV-luminescence and Raman spectra were intensified and redshifted with the increment of precursor concentration. Spectral intensification suggests improvement in crystal qualities and better optical properties of the fabricated ZnO nanostructures. The structural defects at lower levels of precursor were probably due to the hypoxic environment, whereas, the redshift of PL and Raman spectra was due to the local heating of ZnO nanocrystals. 2012-06-19T13:43:17Z 2012-06-19T13:43:17Z 2012-01 Article Physica Status Solidi (A) Applications and Materials Science vol. 209(1), 2012, pages 143-147 1862-6300 http://onlinelibrary.wiley.com/doi/10.1002/pssa.201127357/abstract;jsessionid=F1A438E0CA14CEF4C27CD65864F8EB17.d03t02 http://hdl.handle.net/123456789/20006 en WILEY-VCH Verlag GmbH & Co. |
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Phonon redshift Precursor and seed solution Sol-gel ZnO nanoflakes structures |
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Phonon redshift Precursor and seed solution Sol-gel ZnO nanoflakes structures Mohammad, Kashif Syed Muhammad, Usman Ali Mohamed A, Mohd Ali Abdulgafour, H. I. Uda, Hashim, Prof. Dr. Willander, Magnus Zainuriah, Hassan Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method |
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Link to publisher's homepage at http://onlinelibrary.wiley.com |
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uda@unimap.edu.my |
| author_facet |
uda@unimap.edu.my Mohammad, Kashif Syed Muhammad, Usman Ali Mohamed A, Mohd Ali Abdulgafour, H. I. Uda, Hashim, Prof. Dr. Willander, Magnus Zainuriah, Hassan |
| format |
Article |
| author |
Mohammad, Kashif Syed Muhammad, Usman Ali Mohamed A, Mohd Ali Abdulgafour, H. I. Uda, Hashim, Prof. Dr. Willander, Magnus Zainuriah, Hassan |
| author_sort |
Mohammad, Kashif |
| title |
Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method |
| title_short |
Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method |
| title_full |
Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method |
| title_fullStr |
Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method |
| title_full_unstemmed |
Morphological, optical, and Raman characteristics of ZnO nanoflakes prepared via a sol-gel method |
| title_sort |
morphological, optical, and raman characteristics of zno nanoflakes prepared via a sol-gel method |
| publisher |
WILEY-VCH Verlag GmbH & Co. |
| publishDate |
2012 |
| url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/20006 |
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1643792982707535872 |