金属薄膜透射率与膜厚的理论研究

文档编号:WLX055  字数:9471,页数:19

摘  要
 当金属薄膜厚度小于或相当于电磁波的穿透深度时，其反射率、透射率都会发生明显的变化。因此，研究金属纳米薄膜对电磁波的发射和透射对于基础研究和实际应用都非常的重要。本文研究的是金属薄膜透射率与薄膜厚度的关系，是在薄膜厚度小于工作波长（既纳米厚度）的情况下本文用Hadley公式、有效介质模型中的Maxell-Garnett公式计算纳米金属薄膜的反射、透射和吸收与膜厚的关系，并利用上述方法计算金属纳米铜薄在波长为600nm时和金属纳米金薄膜在波长为532nm时的透射率随薄膜厚度的变化情况，绘制出了其关系曲线，并根据可见光情况下金属薄膜透射率随厚度变化的实验数据对理论进行修正。
关键词：金属薄膜 透射率 有效介质模型 膜厚

Abstract
 When the metal film thickness is less than or equal to penetration depth of the electromagnetic wave, its reflectance, transmittance will changed dramatically. Therefore, the study of metal nano-thin film on the electromagnetic wave emission and transmission for basic research and practical applications are very important. This study is the metal film transmission rate and the relationship between film thickness is smaller than the wavelength of the film thickness (both nanometer thickness) in the case of this formula with Hadley, effective medium models Maxell-Garnett formula reflective nano-metal films , transmission and absorption and the thickness of the relationship, and using the above method of metal nano-copper thin at the wavelength of 600nm and metal nano-Au films when the wavelength of 532nm at the time of transmittance with film thickness, and drew out its curves , based on metal films under visible light transmission rate of the experimental data with the thickness of the modified theory. Keywords：Metal film   transmittance   effective medium model   metal film thickness

目  录
中文摘要 i
英文摘要 ii
目录 iii
第一章 绪论 1
1.1 金属薄膜的定义 1
1.2 金属薄膜的应用领域 2
1.3 金属薄膜的研究现状 2
1.4 研究的意义 4
第二章 计算理论 5
2.1 金属的折射系数和消光系数 5
2.2 单一界面的反射率和透射率的计算 5
2.3 单层膜的反射 6
2.4 单层膜的透射 6
2.5 MG理论 7
第三章 计算结果和分析 10
3.1 Hadley公式 10
3.2 应用M-G公式的计算 11
3.3 铜膜理论计算的结果 11
3.4 金膜理论计算的结果 12
第四章 结论 14
致谢 15
参考文献 16

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