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Enhanced photoluminescence of single crystalline ZnO nanotubes in ZnAl2O4 shell
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cha, Hyun Gil Kwon, Tae Ha Kang, Young Soo |
| Copyright Year | 2012 |
| Abstract | Epitaxial growth of ZnO/ZnAl2O4 (core/shell) nanotubes from Al2O3 coated ZnO nanorods were synthesized using a three-step reaction. In the first step we synthesized ZnO nanorod on Si(100) wafers using chemical vapor deposition, followed by Al2O3 deposition on synthesized ZnO nanorod with the help of atomic-layer deposition. Finally in the last step, the resultant sample (i.e.Al2O3 deposited ZnO nanorod) was calcined at 500 °C for 1 h. Hexagonally well-faceted ZnO nanorod arrays were aligned to Si(100) wafers without metal-catalyst at 500 °C for 1 h. Thereafter it was transformed to spinel-type ZnAl2O4 nanotubes, which still have ZnO nanotube as a core, by interfacial solid-state reaction in Al2O3 coated ZnO nanorods. XRD and Raman analysis demonstrated that single crystallites of both nanotubes co-exist. The photoluminescence spectra show that ZnO nanorod, Al2O3 coated ZnO nanorod, ZnO/ZnAl2O4 (core/shell) nanotube indicated different luminescence bands with different intensity at He–Cd laser excitation (325 nm line). |
| Starting Page | 1205 |
| Ending Page | 1209 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C2CE06118J |
| Alternate Webpage(s) | http://www.rsc.org/suppdata/ce/c2/c2ce06118j/c2ce06118j.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C2CE06118J |
| Volume Number | 14 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
