金属纳米球对太阳能电池增强光电效应分析  

Analysis of Metal Nanospheres on the Enchanced Photoelectric Effect in the Solar Cells

作　　者：张婧瑜[1,2] 张佳仁[1] 王鹏[1] 周敏铭 安巍[2] 

机构地区：[1]上海市质量监督检验技术研究院,上海201114 [2]同济大学机械与能源工程学院,上海200093

出　　处：《节能技术》2016年第1期44-47,共4页Energy Conservation Technology

摘　　要：使用时域有限差分法(FDTD)研究不同纳米球密集度与直径对Al和Ag纳米球硅基薄膜太阳能电池光电效应的增强作用。计算结果表明,在可见光近红外波段,Ag粒子的光谱增强吸收效率g(λ)曲线波动较Al粒子曲线波动剧烈,Ag粒子的g(λ)曲线存在明显的波峰。对于Ag和Al纳米粒子,随着粒子密集度的增加,增强吸收效率G反而减小,因此针对不同材料和尺寸的纳米球粒子应存在一个最佳的粒子密集度使其G值最大。本文研究了不同直径、材料和粒子密集度的纳米球对硅基薄膜太阳能电池的增强吸收效率的影响,望能为金属纳米粒子在硅基薄膜太阳能电池中的粒子阵列分布设计提供参考,以增强光伏电池的光电效应。The finite difference time - domain method is performed to investigate the influence of the di- ameters and nanosphere densities to the thin -film silicon solar cells with Al and Ag nanospheres. The results show that the curves of absorption enhancement g（k） for Ag have the obvious peak value, while the g（k） curves have less fluctuations for Al nanospheres. Furthermore, because the value of the inte- grated absorption enhancement G at high density is different from that at low density for Al and Ag parti- cles, it is speculated that, for different materials and sizes of the nanospheres, there is a critical nano- sphere density corresponding to the maximum G. In addition, the present work investigates the influence of different diameters, materials and densities of nanospheres to the integrated absorption enhancement G for the thin - film silicon solar cells, which can provide reference for the design of nanosphere distribution to enhance photon absorption of thin - film silicon solar cells.

关 键 词：太阳能电池 纳米球 光谱增强吸收效率 纳米球密集度 

分 类 号：TK513[动力工程及工程热物理—热能工程]