Modulation of the optical transmittance in monolayer graphene oxide by using external electric field.

Modulation of the optical transmittance in monolayer graphene oxide by using external electric field.
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利用外电场调制单层氧化石墨烯的光透射率

DOI:
10.1038/srep14441
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发表时间:
2015-09-25
期刊:
影响因子:
4.6
通讯作者:
Jia S
Jia S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Qiao Z;Qin C;Gao Y;Zhang G;Chen R;Xiao L;Jia S

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氧化石墨烯(GO)因其具有宽光谱响应和丰富的光学性质而成为光电子器件中的功能材料。在这篇文章中,表明单层GO(mGO)的光学透射率振幅的变化可以达到24.8%的外电场。利用快速傅里叶变换分析了透射谱的频率谐波,从而深入了解了调制机理。提出了两个物理模型,即随电场线性变化的介电常数和薄层电导率,来响应透射率调制。基于模型的模拟与实验结果吻合得很好。
Graphene oxide (GO) emerges as a functional material in optoelectronic devices due to its broad spectrum response and abundant optical properties. In this article, it is demonstrated that the change of optical transmittance amplitude for monolayer GO (mGO) could be up to 24.8% by an external electric field. The frequency harmonics for transmittance spectra are analyzed by use of Fast Fourier Transforms to give an insight into the modulation mechanism. Two physical models, the electrical permittivity and the sheet conductivity which linearly vary as the electric field, are proposed to response for the transmittance modulation. The model-based simulations agree reasonable well with the experimental results.
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影响因子: --
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