超薄晶硅太阳电池表面介质纳米结构减反及陷光机理研究  

RESEARCH ON ANTIREFLECTION AND LIGHT TRAPPING PROPERTIES FOR DIELECTRIC NANOSTRUCTURES ON ULTRATHIN CRYSTALLINE SILICON SOLAR CELLS

作　　者：王岩岩 钱敏[1] 蒋晓慧 张瑞英 吴雪梅[4] Wang Yanyan;Qian Min;Jiang Xiaohui;Zhang Ruiying;Wu Xuemei(School of Optical and Electronic Information,Suzhou City University,Suzhou 215104,China;Division of Nanodevices and Related Materials,Suzhou Institute of Nano-tech and Nano-bionics,Chinese Academy of Sciences,Suzhou 215123,China;Suzhou Institute of Metrology,Suzhou 215128,China;School of Physical Science and Technology,Soochow University,Suzhou 215006,China)

机构地区：[1]苏州城市学院光学与电子信息学院,苏州215104 [2]中国科学院苏州纳米技术与纳米仿生研究所,纳米器件及相关材料部,苏州215123 [3]苏州市计量测试院,苏州215128 [4]苏州大学物理科学与技术学院,苏州215006

出　　处：《太阳能学报》2023年第7期135-140,共6页Acta Energiae Solaris Sinica

基　　金：江苏省高等学校基础科学(自然科学)研究面上项目(21KJD430002);国家自然科学基金面上项目(11975163)。

摘　　要：该文以实现宽谱减反、吸收增强的介质纳米结构织构化表面超薄晶硅太阳电池为目标,利用时域有限差分(FDTD)方法,系统仿真不同形貌纳米结构对太阳电池宽谱减反及吸收性能的影响。同时,借助仿真所得电场强度分布数据,进一步分析介质纳米结构织构化表面的超薄晶硅电池减反及陷光机理。结果表明:基于Mie共振散射、Fabry-Perot共振等多种模式的共同作用,表面制备介质纳米结构的超薄晶硅电池对入射光的吸收能力较表面制备单层减反层的电池大大提升,在部分波段甚至超过Yablonovitch界限。This research is dedicated to the improvement of the dielectric nanostructures decorated ultrathin crystalline silicon(c-Si)solar cells with broadband antireflection and enhanced absorption ability.Finite difference time domain(FDTD)method is used to simulate the effects of nanostructures with different sidewall profile on the broadband antireflection and enhanced absorption ability for the solar cells.Further analysis is implemented for the antireflection and light trapping mechanisms of the dielectric nanostructures decorated ultrathin c-Si solar cells with the help of the simulated field intensity distribution data.The results show that the dielectric nanostructures decorated c-Si solar cells presented improved light absorptance ability compared with the single antireflection layer(SARL)decorated cells,owing to the combination of multiple modes including Mie resonance scattering,Fabry-Perot resonance,ect.,with the absorption even surpasses the Yablonovitch limit at some wavelengths range.

关 键 词：减反膜 光吸收 时域有限差分方法 介质纳米结构 超薄晶硅太阳电池 

分 类 号：TM914.4[电气工程—电力电子与电力传动]