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Light-scattering effectiveness of two-dimensional disordered surface textures in thin-film silicon solar cells

机译:薄膜硅太阳能电池中二维无序表面纹理的光散射效率

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摘要

To compare the light-scattering effectiveness of surface-textured solar cells of various design parameters such as density, diameter, refractive index, and location, this study used a new parameter, optical path length gain (OPLG), that is more sensitive than Haze. By modeling two-dimensional disordered textures as a structure that comprises many randomly distributed, small, spherical scatterers, ray-tracing simulations of surface-textured thin-film silicon solar cells were performed. The simulation results suggest that: (1) the optimal scatterer diameter for hydrogenated amorphous silicon (a-Si:H) solar cells is ~50 nm, producing an average OPLG of 3.5; and (2) the optimal scatterer diameter for a-Si:H/μc-Si:H (hydrogenated microcrystalline silicon) tandem cells is ~75 nm, producing an average OPLG of 3.4 and an increase in the bandwidth of the absorption spectrum of 14.5%.
机译:为了比较具有各种设计参数(例如密度,直径,折射率和位置)的表面纹理太阳能电池的光散射效率,本研究使用了一个新参数,光程长度增益(OPLG),它比霾更敏感。通过将二维无序纹理建模为包含许多随机分布的小球形散射体的结构,对表面纹理化的薄膜硅太阳能电池进行了射线追踪仿真。仿真结果表明:(1)氢化非晶硅(a-Si:H)太阳能电池的最佳散射体直径约为50 nm,平均OPLG为3.5。 (2)a-Si:H /μc-Si:H(氢化微晶硅)串联电池的最佳散射直径为〜75 nm,平均OPLG为3.4,吸收光谱的带宽增加了14.5。 %。

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