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FEM-based optical modeling of silicon thin-film tandem solar cells with randomly textured interfaces in 3D

机译:基于FEM的3D界面随机纹理的硅薄膜串联太阳能电池的光学建模

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摘要

Light trapping techniques are one of the key research areas in thin film silicon photovoltaics. Since the f980s randomly rough textured front transparent oxides (TCOs) have been the methods of choice as light trapping strategies for thin-film devices. Light-trapping efficiency can be optimized by means of optical simulations of nano-structured solar cells. We present a FEM based simulator for 3D rigorous optical modeling of amorphous silicon / microcrystalline silicon tandem thin-film solar cells with randomly textured layer interfaces. We focus strongly on an error analysis study for the presented simulator to demonstrate the numerical convergence of the method and investigate grid and finite element degree refinement strategies in order to obtain reliable simulation results.
机译:捕光技术是薄膜硅光伏技术的关键研究领域之一。由于f980s随机粗糙的前表面透明氧化物(TCO)已成为薄膜设备的光捕获策略的选择方法。可以通过对纳米结构太阳能电池的光学模拟来优化捕光效率。我们提出了一种基于FEM的模拟器,用于具有随机纹理层界面的非晶硅/微晶硅串联薄膜太阳能电池的3D严格光学建模。我们将重点放在所提供模拟器的误差分析研究上,以证明该方法的数值收敛性,并研究网格和有限元度的细化策略,以获得可靠的模拟结果。

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