| Autor: |
Qing QW Wei, Guowen GM Meng, Xiaohong XA An, Yufeng YH Hao, Lide LZ Zhang |
| Předmět: |
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| Zdroj: |
Nanotechnology; Nov2005, Vol. 16 Issue 11, p2561-2566, 6p |
| Abstrakt: |
ZnO nanostructures with different morphologies have been achieved bysimple thermal evaporation of mixed powders of ZnS, graphite andSnO2 at1050 °C in a flowing Ar atmosphere. Branched nanobelts and wide nanosheetsof ZnO were formed on Si wafers at a temperature of 700 and500 °C, respectively. As for the branched nanobelts, there exist nanotwins alongthe axial direction of the stem belts, and a definite included angle about70° between the stem and the branch. In contrast, the wide nanosheets have a rectangle-likecross-section with typical widths of 200 nm to several micrometres and lengths of up to tensof micrometres. Photoluminescence measurements reveal that the branched nanobelts andwide nanosheets have visible green emission bands at about 530 and 510 nm, respectively.The branched ZnO nanobelts have potential for building optoelectronic nanodeviceswith special configurations, and the ZnO nanosheets might be used in nanoscalesensors. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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