用于多结太阳电池的均匀聚光菲涅耳透镜的设计与分析  

Design and Analysis of Fresnel Lens with Uniformity Irradiance for Multi-Junction Solar Cells

作　　者：付蕊[1] 陈诺夫[1] 刘虎[1,2] 白一鸣[1] 马大燕[1] 陶泉丽 陈吉堃[3] 

机构地区：[1]华北电力大学可再生能源学院,北京102206 [2]石家庄铁道大学数理系,河北石家庄050041 [3]北京科技大学材料科学与工程学院,北京100083

出　　处：《光学学报》2016年第12期244-251,共8页Acta Optica Sinica

基　　金：国家自然科学基金(61006050;61076051);国家863计划(2011AA050507);中央高校基本科研业务费专项资金(13ZD05);北京市自然科学基金(2151004)

摘　　要：设计了一种适用于GaInP/GaInAs/Ge多结太阳电池,可在300~1800nm宽光谱范围内实现均匀聚光的菲涅耳透镜。通过实际测试,得到GaInP/GaInAs/Ge多结太阳电池的量子效率图谱和透镜主体材料硅胶的折射率色散曲线,在此基础之上采用多焦点与多设计波长相结合的方法,对菲涅耳透镜进行优化设计。基于该方法建立了几何聚光比为625倍,环距为0.3mm的透镜模型以及聚光效率、均匀性等聚光性能参数的计算模型,并利用蒙特卡罗光线追迹及实验测试的方法对其聚光性能进行分析。研究结果表明,所设计的透镜在300~1800nm宽光谱范围内以及三个子电池的光谱响应波段内都能较好地实现均匀会聚,同时具有较高的聚光效率,聚光分布均匀度高于75%,聚光效率超过80%。This paper presents the design of a new Fresnel lens for GaInP/GaInAs/Ge multi-junction solar cells,with which uniformity irradiance distribution can be realized within the broadband solar spectrum from 300 nm to1800 nm.By actual tests,the quantum efficiency spectrum of GaInP/GaInAs/Ge multi-junction solar cells and refractive index dispersion curve of silicone,the body material of the lens are obtained.On this basis,the new Fresnel lens is optimized by combining the multi-wavelength and multi-focus method.Based on this optimization method,the lens model is set up with geometrical concentrator ratio 625× and ring width 0.3 mm,and calculation models for concentrating performance parameters including optical efficiency and uniformity are established.The concentrating performance of the new Fresnel lens is analyzed by Monte-Carlo ray-tracing simulation approach and experimental testing.Results indicate that in the broadband solar spectrum from300 nm to 1800 nm and within the spectral response band of three subcells,uniformity is well achieved with high optical efficiency.The uniformity is higher than 75%,and the optical efficiency is more than 80%.

关 键 词：光学设计 菲涅耳透镜 多波长和多焦点设计 多结太阳电池 均匀性 

分 类 号：O439[机械工程—光学工程]