Synthesis, characterization and cathodoluminescence of self-assembled 1D ZnO/In2O3 nano-heterostructures
Synthesis, characterization and cathodoluminescence of self-assembled 1D ZnO/In2O3 nano-heterostructures
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自组装一维 ZnO/In2O3 纳米异质结构的合成、表征和阴极发光
DOI：
10.1039/c2ce26011e
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发表时间：
2012-09
期刊：
影响因子：
3.1
通讯作者：
Z.B. Ouyang
中科院分区：
文献类型：
--
作者：
B. Wang*;X;Jin;Z.B. Ouyang
在无金属催化剂的条件下，通过热化学气相输运和冷凝在单晶硅衬底上自组装了一维ZnO/In 2 O3纳米异质结构。场发射测量后，这些异质纳米结构已被研究在室温和低温下的阴极发光。In 2 O3纳米齿基本上没有发光发射，而ZnO纳米带的两个边缘处存在强烈的发光发射，这归因于ZnO纳米带的光学谐振腔的Fabry-Perot模式，并使用FEM（有限元法）模拟了结果。此外，场致发射过程中高压损伤引起的退相干现象也导致了部分ZnO纳米带一端出现Fabry-Perot模式发光的进一步增强现象。此外，在ZnO纳米带和In 2 O3纳米齿的界面处也存在发光增强现象，这是由于In 2 O3通过不断贡献激发到ZnO上的载流子，从而形成限制在位于结处的量子威尔斯阱中的2DEG的辐射复合，增强了ZnO的发光。
One-dimensional(1D) ZnO/In2O3 nano-heterostructures of ZnO belts decorated with In2O3 teeth have been self-assembled on single crystal silicon substrates by thermal chemical vapor transport and condensation without any metal catalysts. After field emission measurements, these hetero-nanostructures have been investigated by cathodoluminescence at room temperature and at low temperature. There are basically no luminescence emissions from In2O3 nanoteeth, while intense luminescence emissions existing at two edges of the ZnO nanobelt are attributed to the Fabry–Perot mode from the optical resonator of the ZnO nanobelt and the results are simulated using FEM (finite element method). In addition, further enhancement phenomena of the Fabry–Perot mode luminescence emission appearing at one end of some ZnO nanobelts result from decrystallization caused by high-voltage damage in the process of field emission. What’s more, enhancement of luminescence emissions also existing at the interface of the ZnO nanobelt and In2O3 nanoteeth originates from In2O3 enhancing the luminescence emission of ZnO by continuously contributing carriers excited to ZnO so as to form radiative recombination of 2DEG confined in quantum wells located at the junction.
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影响因子：
1.2
作者：
A. Manoogian;J. Woolley
通讯作者：
A. Manoogian;J. Woolley
ZnO/In2O3(ZnO)n异质结构纳米带的制备
影响因子：
3.1
作者：
张喜田
通讯作者：
张喜田
影响因子：
--
作者：
V. Ursaki;A. Burlacu;E V Rusu;V. Postolake;I. Tiginyanu
通讯作者：
V. Ursaki;A. Burlacu;E V Rusu;V. Postolake;I. Tiginyanu
影响因子：
3.6
作者：
A. V. Dijken;E. Meulenkamp;D. Vanmaekelbergh;A. Meijerink
通讯作者：
A. V. Dijken;E. Meulenkamp;D. Vanmaekelbergh;A. Meijerink
影响因子：
3.5
作者：
Ghosh, Manoranjan;Raychaudhuri, A. K.
通讯作者：
Raychaudhuri, A. K.