基于空气圆盘串的二维表面等离子体光栅光吸收器

发布时间：2018-09-18 11:47

【摘要】：本文设计了一种基于空气圆盘串的二维表面等离子体光栅光吸收器,采用二维时域有限差分法(2DFDTD)对该吸收器的平均吸收率随其几何结构参数的依赖关系进行了分析。结果表明:在可见光波段,空气圆盘串上圆盘的层数对该吸收器的吸收效果有较大的影响,层数越多,吸收效果越好。在层数一定的情况下,圆盘的半径、相邻圆盘串之间的中心距离、同一圆盘串上相邻圆盘的圆心之间的距离,相互影响,相互牵连。通过对吸收特性的优化,给出了优化结构参数。这种表面等离子体光栅光吸收器可应用于薄膜太阳能电池、传感器、滤波器、成像、热辐射和探测等多个领域。
[Abstract]:In this paper, a two-dimensional surface plasmon grating optical absorber based on air disk string is designed, and the dependence of the average absorptivity of the absorber on its geometrical parameters is analyzed by using two-dimensional finite-difference time-domain (2DFDTD) method. The results show that the number of layers of the disk on the air disk string is in the visible light band. The more layers, the better the absorption effect. The radius of disk, the center distance between adjacent disk strings, the distance between the centers of adjacent disks on the same disk strings affect each other and are involved in each other. By optimizing the absorption characteristics, the optimized structure parameters are given. Plasma grating optical absorber can be used in thin film solar cells, sensors, filters, imaging, thermal radiation and detection and many other fields.
【作者单位】：山西大学物理电子工程学院;
【基金】：国家自然科学基金(61178013,61172045) 国家基础科学人才培养基金(J1103210)
【分类号】：TH74

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