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首页> 外文期刊>Semiconductor science and technology >Optical properties from photoelectron energy-loss spectroscopy of low- temperature aqueous chemically synthesized ZnO nanorods grown on Si
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Optical properties from photoelectron energy-loss spectroscopy of low- temperature aqueous chemically synthesized ZnO nanorods grown on Si

机译：光电电气化学合成ZnO纳米棒的光电子能量损耗光谱的光学性质在Si上生长

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摘要

The optical properties of zinc oxide (ZnO) nanorods (NRs) synthesized by the low-temperature aqueous chemical method on top of silicon (Si) substrate have been investigated by means of photoelectron energy loss spectroscopy (PEELS). The ZnO NRs were obtained by the low temperature aqueous chemical synthesis on top of Si substrate. The measured valence band, the dynamical dielectric functions and optical absorption of the material show a reasonable agreement when the trending and shape of the theoretical calculations are considered. A first-principle calculation based on density functional theory (DFT) was performed using the partially self-consistent GW approximation (scGW(0)) and compared to the experimental results. The application of these two techniques brings a new analysis of the electronic properties of this material. The experimental results regarding the density of states (DOS) obtained for the valence band using x-ray photoelectron spectroscopy (XPS) was found to be consistent with the theoretical calculated value. Due to this consistency, the same wavefunctions was then employed to calculate the dielectric function of the ZnO NRs. The experimentally extracted dielectric function was also consistent with the calculated values.
机译：通过光电子能量损失光谱（皮带）研究了通过低温含水化学方法合成的氧化锌（ZnO）纳米棒（NRS）的光学性质。通过低温含水化学合成在Si衬底上获得ZnO NR。当考虑理论计算的趋势和形状时，材料的测量值频带，动态介电功能和光学吸收显示了合理的一致性。使用部分自我一致的GW近似（SCGW（0））进行基于密度泛函理论（DFT）的第一原理计算，并与实验结果相比。这两种技术的应用为该材料的电子性质提供了新的分析。发现了关于使用X射线光电子谱（XPS）的价带获得的状态密度（DOS）密度的实验结果与理论计算值一致。由于这种一致性，然后采用相同的波函数来计算ZnO NRS的介电功能。实验提取的介电函数也与计算值一致。

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