The effect of the texture and the density of ZnO seed layer on the orientation of ZnO nanorod arrays.
The effect of the texture and the density of ZnO seed layer on the orientation of ZnO nanorod arrays.
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DOI：
10.1166/jnn.2009.1239
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发表时间：
2009-10
影响因子：
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通讯作者：
Teng Ma;Min Guo;Mei Zhang;Xidong Wang
中科院分区：
文献类型：
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作者：
Teng Ma;Min Guo;Mei Zhang;Xidong Wang
系统研究了ZnO种子层的织构和密度对ZnO纳米棒阵列（ZNAs）取向的影响，并解释了水热沉积过程中ZNAs的垂直生长机制。结果表明，ZnO籽晶层的织构决定了ZNAs的生长方向，由于ZnO籽晶层的高籽晶密度和不完整的c轴织构，纳米棒之间的相互作用明显增强了ZNAs的c轴织构。根据ZnO籽晶层的籽晶密度行为，研究了影响ZnO纳米晶取向的主要因素。结果表明，种子层的生长情况可分为高密度种子层生长、中等密度种子层生长和稀疏分布种子层生长三类。我们还建立了ZNAs的密度和取向之间的相关性，这种准定量的相关性可以用来制备具有合适密度和取向的ZNAs。
The effect of the texture and the density of ZnO seed layer on the orientation of ZnO nanorod arrays (ZNAs) was systematically investigated, and the vertical growth mechanism of ZNAs during hydrothermal deposition was also explained. It is demonstrated that the textured ZnO seed layer determines the orientation of ZNAs which grow on it. The interaction among nanorods, which derives from the high crystal seed density and the incomplete c-axis texture of ZnO seed layer, obviously reinforces the c-axis texture of ZNAs. According to the seed density behavior of ZnO seed layer, the dominate factor which influences the orientation of ZNAs has been studied. And the results classify the growth situations into three categories: the high density seed layer initiated growth, the middle density seed layer initiated growth and the sparsely separated seeds initiated growth. We also establish the correlation between the density and the orientation of ZNAs, this quasi-quantitative correlation can be used to fabricate the ZNAs with suitable density and orientation.