金属纳米颗粒光散射提高薄膜光伏电池光能吸收率的理论研究  

Theoretic consideration for enhancing the light traping of the thin-filmphotovoltaic cell by light scattering of metal nanoparticles

作　　者：罗道斌[1] 刘建科[1] 吴超[1] 崔永宏[1] 

机构地区：[1]陕西科技大学理学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2013年第1期151-154,共4页Journal of Shaanxi University of Science & Technology

基　　金：陕西省自然科学基金资助项目(2011JM1014);陕西省教育厅资助项目(11JK0556);陕西科技大学资助项目(ZX11-31);咸阳市科技局项目(2012K04-22);国家级学生创新项目(201210708060)

摘　　要：在准静态近似下,分析了球形金属纳米颗粒的光散射和吸收特性.金属纳米颗粒的介电函数用Drude模型描述的情形下,得出了银纳米颗粒在可见光、红外波谱范围散射效率与纳米颗粒半径的关系.利用金属纳米颗粒的光散射特性可提高薄膜光伏电池的光能吸收率.简要分析了其提高薄膜光伏电池光能吸收率的机理.For small metal nanoparticles in the quasistatic limit, the scattering and absorption cross sections are derived. The scattering efficiency is also deduced under Durde model with- in the scope of visible and infrared light. Based on the scattering features of the metal nanop- articles, The light absorbing efficiency of the thin-film photovoltaic cell may be enhanced. The basic principle of enhancing the photovoltaic cell efficiency is presented briefly in this pa- per.

关 键 词：金属纳米颗粒 散射效率 光伏电池 

分 类 号：O482.3[理学—固体物理]