Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method
Uniformly distributed ZnO nanorods with diameter 70-100 nm and 1-2μm long have been successfully grown at low temperatures on GaN by using the inexpensive aqueous solution method. The formation of the ZnO nanorods and the growth parameters are controlled by reactant concentration, temperature and pH...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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2004
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| Online Access: | http://hdl.handle.net/1721.1/7360 |
| _version_ | 1811075992081399808 |
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| author | Quang, Hong Le Chua, Soo-Jin Loh, Kian Ping Chen, Zhen Thompson, Carl V. Fitzgerald, Eugene A. |
| author_facet | Quang, Hong Le Chua, Soo-Jin Loh, Kian Ping Chen, Zhen Thompson, Carl V. Fitzgerald, Eugene A. |
| author_sort | Quang, Hong Le |
| collection | MIT |
| description | Uniformly distributed ZnO nanorods with diameter 70-100 nm and 1-2μm long have been successfully grown at low temperatures on GaN by using the inexpensive aqueous solution method. The formation of the ZnO nanorods and the growth parameters are controlled by reactant concentration, temperature and pH. No catalyst is required. The XRD studies show that the ZnO nanorods are single crystals and that they grow along the c axis of the crystal plane. The room temperature photoluminescence measurements have shown ultraviolet peaks at 388nm with high intensity, which are comparable to those found in high quality ZnO films. The mechanism of the nanorod growth in the aqueous solution is proposed. The dependence of the ZnO nanorods on the growth parameters was also investigated. While changing the growth temperature from 60°C to 150°C, the morphology of the ZnO nanorods changed from sharp tip (needle shape) to flat tip (rod shape). These kinds of structure are useful in laser and field emission application. |
| first_indexed | 2024-09-23T10:14:28Z |
| format | Article |
| id | mit-1721.1/7360 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:14:28Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | mit-1721.1/73602019-04-12T08:39:50Z Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method Quang, Hong Le Chua, Soo-Jin Loh, Kian Ping Chen, Zhen Thompson, Carl V. Fitzgerald, Eugene A. zinc oxide nanorods gallium nitride aqueous solution methods Uniformly distributed ZnO nanorods with diameter 70-100 nm and 1-2μm long have been successfully grown at low temperatures on GaN by using the inexpensive aqueous solution method. The formation of the ZnO nanorods and the growth parameters are controlled by reactant concentration, temperature and pH. No catalyst is required. The XRD studies show that the ZnO nanorods are single crystals and that they grow along the c axis of the crystal plane. The room temperature photoluminescence measurements have shown ultraviolet peaks at 388nm with high intensity, which are comparable to those found in high quality ZnO films. The mechanism of the nanorod growth in the aqueous solution is proposed. The dependence of the ZnO nanorods on the growth parameters was also investigated. While changing the growth temperature from 60°C to 150°C, the morphology of the ZnO nanorods changed from sharp tip (needle shape) to flat tip (rod shape). These kinds of structure are useful in laser and field emission application. Singapore-MIT Alliance (SMA) 2004-12-09T23:32:41Z 2004-12-09T23:32:41Z 2005-01 Article http://hdl.handle.net/1721.1/7360 en Advanced Materials for Micro- and Nano-Systems (AMMNS); 69588 bytes application/pdf application/pdf |
| spellingShingle | zinc oxide nanorods gallium nitride aqueous solution methods Quang, Hong Le Chua, Soo-Jin Loh, Kian Ping Chen, Zhen Thompson, Carl V. Fitzgerald, Eugene A. Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method |
| title | Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method |
| title_full | Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method |
| title_fullStr | Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method |
| title_full_unstemmed | Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method |
| title_short | Characterization of ZnO Nanorods Grown on GaN Using Aqueous Solution Method |
| title_sort | characterization of zno nanorods grown on gan using aqueous solution method |
| topic | zinc oxide nanorods gallium nitride aqueous solution methods |
| url | http://hdl.handle.net/1721.1/7360 |
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