Effect of an interface charge density wave on surface plasmon resonance in ZnO/Ag/ZnO thin films
Effect of an interface charge density wave on surface plasmon resonance in ZnO/Ag/ZnO thin films
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DOI：
10.1063/1.3442916
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发表时间：
2010-06
影响因子：
4
通讯作者：
Dongyang Zhang;Pangpang Wang;R. Murakami;Xiaoping Song
中科院分区：
文献类型：
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作者：
Dongyang Zhang;Pangpang Wang;R. Murakami;Xiaoping Song
光学透射谱表明，由于表面等离子体共振产生的谐波，薄膜的透射率在很大范围内得到了增强。这种共振与金属银和介质氧化锌层之间的界面电子有关。计算了界面电荷密度波，并与采用修正边界条件的麦克斯韦方程的实验结果进行了比较。最后，用欧姆接触模型和Drude自由电子模型讨论了在传输增强中观察到的红移。
The optical transmission spectra of ZnO/Ag/ZnO films showed a broad range of transmission enhancement due to a harmonic generated by surface plasmon resonance. This resonance was correlated with interface electrons between metallic Ag and dielectric ZnO layer. The interface charge density wave was calculated and compared with experimental results using Maxwell’sequations with a modified boundary condition. Finally, an observed redshift in the transmission enhancement is discussed using both the Ohmic contact model and the Drude free electron model.