Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal Evaporation
<p>Abstract</p><p>By thermal evaporation of pure ZnO powders, high-density vertical-aligned ZnO nanorod arrays with diameter ranged in 80–250 nm were successfully synthesized on Si substrates covered with ZnO seed layers. It was revealed that the morphology, orientation,...
| Published in: | Nanoscale Research Letters |
|---|---|
| Main Authors: | , , , , , , , , |
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2008-01-01
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1007/s11671-008-9156-y |
| _version_ | 1851870955521966080 |
|---|---|
| author | Jiang Y Wang H Zhang ZP Wang XN Mo Q Wang Y Zhu JH Wang HB Yang FJ |
| author_facet | Jiang Y Wang H Zhang ZP Wang XN Mo Q Wang Y Zhu JH Wang HB Yang FJ |
| author_sort | Jiang Y |
| collection | DOAJ |
| container_title | Nanoscale Research Letters |
| description | <p>Abstract</p><p>By thermal evaporation of pure ZnO powders, high-density vertical-aligned ZnO nanorod arrays with diameter ranged in 80–250 nm were successfully synthesized on Si substrates covered with ZnO seed layers. It was revealed that the morphology, orientation, crystal, and optical quality of the ZnO nanorod arrays highly depend on the crystal quality of ZnO seed layers, which was confirmed by the characterizations of field-emission scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and photoluminescence measurements. For ZnO seed layer with wurtzite structure, the ZnO nanorods grew exactly normal to the substrate with perfect wurtzite structure, strong near-band-edge emission, and neglectable deep-level emission. The nanorods synthesized on the polycrystalline ZnO seed layer presented random orientation, wide diameter, and weak deep-level emission. This article provides a C-free and Au-free method for large-scale synthesis of vertical-aligned ZnO nanorod arrays by controlling the crystal quality of the seed layer.</p> |
| format | Article |
| id | doaj-art-dbc8df3545ae4ebfa4fc64217b2e4240 |
| institution | Directory of Open Access Journals |
| issn | 1931-7573 1556-276X |
| language | English |
| publishDate | 2008-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| spelling | doaj-art-dbc8df3545ae4ebfa4fc64217b2e42402025-08-19T22:16:49ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2008-01-0139309314Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal EvaporationJiang YWang HZhang ZPWang XNMo QWang YZhu JHWang HBYang FJ<p>Abstract</p><p>By thermal evaporation of pure ZnO powders, high-density vertical-aligned ZnO nanorod arrays with diameter ranged in 80–250 nm were successfully synthesized on Si substrates covered with ZnO seed layers. It was revealed that the morphology, orientation, crystal, and optical quality of the ZnO nanorod arrays highly depend on the crystal quality of ZnO seed layers, which was confirmed by the characterizations of field-emission scanning electron microscopy, X-ray diffraction, transmission electron microscopy, and photoluminescence measurements. For ZnO seed layer with wurtzite structure, the ZnO nanorods grew exactly normal to the substrate with perfect wurtzite structure, strong near-band-edge emission, and neglectable deep-level emission. The nanorods synthesized on the polycrystalline ZnO seed layer presented random orientation, wide diameter, and weak deep-level emission. This article provides a C-free and Au-free method for large-scale synthesis of vertical-aligned ZnO nanorod arrays by controlling the crystal quality of the seed layer.</p>http://dx.doi.org/10.1007/s11671-008-9156-yZnOThermal evaporationNanorod arraysSeed layerCatalyst-free |
| spellingShingle | Jiang Y Wang H Zhang ZP Wang XN Mo Q Wang Y Zhu JH Wang HB Yang FJ Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal Evaporation ZnO Thermal evaporation Nanorod arrays Seed layer Catalyst-free |
| title | Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal Evaporation |
| title_full | Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal Evaporation |
| title_fullStr | Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal Evaporation |
| title_full_unstemmed | Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal Evaporation |
| title_short | Selective Growth of Vertical-aligned ZnO Nanorod Arrays on Si Substrate by Catalyst-free Thermal Evaporation |
| title_sort | selective growth of vertical aligned zno nanorod arrays on si substrate by catalyst free thermal evaporation |
| topic | ZnO Thermal evaporation Nanorod arrays Seed layer Catalyst-free |
| url | http://dx.doi.org/10.1007/s11671-008-9156-y |
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