碳纳米管光电器件光学特性的电磁模型研究

Study on the Electromagnetic Model for Optical Properties of Optoelectronic Devices Based on Carbon Nanotube

摘要:

针对基于碳纳米管阵列构成的光电器件,建立基于场效应器件结构的电磁散射模型,对其光电吸收特性进行了仿真分析。模型仿真结果表明,当碳纳米管阵列间距为入射光波长的整数倍时,碳纳米管的吸收功率达到峰值,当在两个波长之间,吸收功率按线性衰减,对应于入射光的不同倍数波长的吸收功率的峰值随波长的增加而线性衰减。在吸收功率峰值附近,吸收功率随阵列周期间距的变化而敏感。

Abstract:

A reasonable electromagnetic model was built to make simulations on optical properties of the field effect devices based on carbon nanotubes (CNTs). Simulation results show that the absorbing power of the CNTs peaks when the pitch of the nanotubes is integral multiple of the incident light wavelength, while for the pitch among two different incident wavelengthes, the peak of the absorbing power presents a linear attenuation as the wavelength increase.