Energetic Evolution of Single-Crystalline ZnO Nanowires and Nanotubes

We report the formation energies of wurtzite zinc oxide （w-ZnO） nanowires （NWs） and nanotubes （NTs） with faceted morphologies, and show that hexagonal NWs （h-NWs） are energetically advantageous over the NWs with rhombic （r-）, squared （s-）, and triangular （t-） cross sections. The formation energies o...

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Bibliographic Details
Published in:Chinese physics letters 2010-08, Vol.27 (8), p.139-142
Main Author: 李丽娟 赵明文 季燕菊 李峰 刘向东
Format: Article
Language:English
Subjects:
Energy of formation
Evolution
Inverse
Nanotubes
Nanowires
Single crystals
Wire
Zinc oxide
形成能
氧化锌纳米线
碳纳米管
纤锌矿
营养素
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Summary:We report the formation energies of wurtzite zinc oxide （w-ZnO） nanowires （NWs） and nanotubes （NTs） with faceted morphologies, and show that hexagonal NWs （h-NWs） are energetically advantageous over the NWs with rhombic （r-）, squared （s-）, and triangular （t-） cross sections. The formation energies of h-NWs are proportional to the inverse of wire radius, whereas those of single-crystalline NTs are proportional to the inverse of wall thickness, irrespectively to tube radius. A simple model is presented to interpret these features.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/8/086105