Synthesis and characterization of cu-doped ZnO nanorods
Cu-doped ZnO nanorods were synthesized by sol-gel method using zinc nitrate tetrahydrate, methenamine and cupric acetate monohydrate as precursors. The as-synthesized ZnO nanorods have a twin-rod structure. The polar (002) surface of ZnO nanorods, which could be either negatively charge (O-terminate...
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Universiti Kebangsaan Malaysia
2014
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| Online Access: | http://journalarticle.ukm.my/6858/ http://journalarticle.ukm.my/6858/ http://journalarticle.ukm.my/6858/1/16_S.Y._Pung.pdf |
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ukm-68582016-12-14T06:42:23Z http://journalarticle.ukm.my/6858/ Synthesis and characterization of cu-doped ZnO nanorods Pung, S.Y. Ong, C.S. Mohd Isha, K. Othman, M.H. Cu-doped ZnO nanorods were synthesized by sol-gel method using zinc nitrate tetrahydrate, methenamine and cupric acetate monohydrate as precursors. The as-synthesized ZnO nanorods have a twin-rod structure. The polar (002) surface of ZnO nanorods, which could be either negatively charge (O-terminated) or positively charged (Zn-terminated), was responsible for the formation of twin-rod structure. The results showed that the size, aspect ratio, crystallinity and c-lattice parameter of Cu doped ZnO nanorods decreased with increasing of Cu dopant concentration. In fact, the presence of Cu retarded the growth of ZnO nanorods in its preferred growth direction, i.e. (0001). The XPS analysis indicates that Cu ions were oxidized (Cu2+) and substituted into the ZnO lattice at the Zn2+ site. The presence of Cu reduced the optical bandgap of ZnO from 3.34 eV (undoped ZnO nanorods) to 3.31 eV (20 mol% Cu doped ZnO). Besides, it induced a visible PL emission at 2.97 eV, which could be related to the transition of electrons from conduction band (Ec) to Cu acceptor energy level (Ev + 0.45 eV) radiatively. Universiti Kebangsaan Malaysia 2014-02 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/6858/1/16_S.Y._Pung.pdf Pung, S.Y. and Ong, C.S. and Mohd Isha, K. and Othman, M.H. (2014) Synthesis and characterization of cu-doped ZnO nanorods. Sains Malaysiana, 43 (2). pp. 273-281. ISSN 0126-6039 http://www.ukm.my/jsm |
| repository_type |
Digital Repository |
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Local University |
| institution |
Universiti Kebangasaan Malaysia |
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UKM Institutional Repository |
| collection |
Online Access |
| language |
English |
| description |
Cu-doped ZnO nanorods were synthesized by sol-gel method using zinc nitrate tetrahydrate, methenamine and cupric acetate monohydrate as precursors. The as-synthesized ZnO nanorods have a twin-rod structure. The polar (002) surface of ZnO nanorods, which could be either negatively charge (O-terminated) or positively charged (Zn-terminated), was responsible for the formation of twin-rod structure. The results showed that the size, aspect ratio, crystallinity and c-lattice parameter of Cu doped ZnO nanorods decreased with increasing of Cu dopant concentration. In fact, the presence of Cu retarded the growth of ZnO nanorods in its preferred growth direction, i.e. (0001). The XPS analysis indicates that Cu ions were oxidized (Cu2+) and substituted into the ZnO lattice at the Zn2+ site. The presence of Cu reduced the optical bandgap of ZnO from 3.34 eV (undoped ZnO nanorods) to 3.31 eV (20 mol% Cu doped ZnO). Besides, it induced a visible PL emission at 2.97 eV, which could be related to the transition of electrons from conduction band (Ec) to Cu acceptor energy level (Ev + 0.45 eV) radiatively. |
| format |
Article |
| author |
Pung, S.Y. Ong, C.S. Mohd Isha, K. Othman, M.H. |
| spellingShingle |
Pung, S.Y. Ong, C.S. Mohd Isha, K. Othman, M.H. Synthesis and characterization of cu-doped ZnO nanorods |
| author_facet |
Pung, S.Y. Ong, C.S. Mohd Isha, K. Othman, M.H. |
| author_sort |
Pung, S.Y. |
| title |
Synthesis and characterization of cu-doped ZnO nanorods |
| title_short |
Synthesis and characterization of cu-doped ZnO nanorods |
| title_full |
Synthesis and characterization of cu-doped ZnO nanorods |
| title_fullStr |
Synthesis and characterization of cu-doped ZnO nanorods |
| title_full_unstemmed |
Synthesis and characterization of cu-doped ZnO nanorods |
| title_sort |
synthesis and characterization of cu-doped zno nanorods |
| publisher |
Universiti Kebangsaan Malaysia |
| publishDate |
2014 |
| url |
http://journalarticle.ukm.my/6858/ http://journalarticle.ukm.my/6858/ http://journalarticle.ukm.my/6858/1/16_S.Y._Pung.pdf |
| first_indexed |
2023-09-18T19:48:03Z |
| last_indexed |
2023-09-18T19:48:03Z |
| _version_ |
1777406033369497600 |