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The stability and electronic structure of single-walled ZnO nanotubes by density functional theory

机译:基于密度泛函理论的单壁ZnO纳米管的稳定性和电子结构

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摘要

Stimulated by the experimental synthesis of BN and AlN nanotubes, there has been considerable interest in nanotubes by noncarbon elements. Our density functional calculations show that the graphitic planar structure of ZnO is relatively stable and experimentally accessible. The single-walled nanotubes of ZnO have small strain energies, less than BN tubes of the same size. Hence, under certain experimental conditions, single-walled ZnO nanotubes might be fabricated. The calculated bandgaps of single-walled ZnO nanotubes are relatively uniform (similar to 2 eV) and almost independent of structures, which are located within a range inaccessible to BN, AlN, or GaN nanotubes.
机译:通过BN和AlN纳米管的实验合成,非碳元素对纳米管产生了相当大的兴趣。我们的密度泛函计算表明,ZnO的石墨平面结构相对稳定并且可以通过实验获得。 ZnO的单壁纳米管具有较小的应变能,小于相同尺寸的BN管。因此,在某些实验条件下,可以制造单壁ZnO纳米管。计算得出的单壁ZnO纳米管的带隙相对均匀(类似于2 eV),并且几乎与结构无关,结构位于BN,AlN或GaN纳米管无法接近的范围内。

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