Effect of thermal treatment on the structure and optical properties of biomimic hierarchical ZnO column arrays

Effect of thermal treatment on the structure and optical properties of biomimic hierarchical ZnO column arrays
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热处理对仿生分级ZnO柱阵列结构和光学性能的影响

DOI:
10.1016/j.jallcom.2010.02.016
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发表时间:
2010-04
影响因子:
6.2
通讯作者:
--
中科院分区:
材料科学2区
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--
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为了研究热处理对仿生层状氧化锌柱阵的结构和光学性质的影响,对生长的仿生层状氧化锌柱阵在200~650℃的空气中进行了退火处理,并用高分辨率电子显微镜图像观察了其层状结构的变化。UV-Vis光谱表明,随着热处理温度的不同,样品的结构发生了有趣的变化。退火后的仿生阵列的光致发光强度增加了约520 nm。并对可见光发射的机理进行了讨论。
In order to study the effect of thermal treatment on the structure and optical properties of biomimic hierarchical ZnO column arrays, the as-grown biomimic hierarchical ZnO column arrays were annealed in air from 200 to 650°C, and the change of their hierarchical structure was observed by the high-resolution transmission electronic microscopy image. The UV–vis spectra exhibited an interesting change of the structure with different annealing temperatures. Photoluminescence intensity of annealed biomimic arrays was increased at about 520nm. The mechanism of visible emission was also discussed.
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