Laser action in ZnO nanoneedles selectively grown on silicon and plastic substrates
An ion-beam technique has been employed to fabricate nanoscale needlelike structures in ZnO thin films on silicon and plastic substrates at room temperature. The ZnO nanoneedles showed a single-crystalline wurtzite structure, the stem of which was around 100 nm in diameter. The sharp tips of the...
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| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/90504 http://hdl.handle.net/10220/18819 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | An ion-beam technique has been employed to fabricate nanoscale needlelike structures in ZnO thin
films on silicon and plastic substrates at room temperature. The ZnO nanoneedles showed a
single-crystalline wurtzite structure, the stem of which was around 100 nm in diameter. The sharp
tips of the nanoneedles exhibited an apex angle of 20° as measured by transmission electron
microscopy. Room-temperature ultraviolet random lasing action was observed in the ZnO
nanoneedle arrays under 355 nm optical excitation. |
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