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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Grain Boundaries on the Performance of Thin-Film-Based Polycrystalline Silicon Solar Cells: A Numerical Modeling
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Effect of Grain Boundaries on the Performance of Thin-Film-Based Polycrystalline Silicon Solar Cells: A Numerical Modeling

机译：晶界对基于薄膜多晶硅太阳能电池性能的影响：数值模拟

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摘要

Solar cells/photovoltaic, a renewable energy source, is appraised to be the most effective alternative to the conventional electrical energy generator. A cost-effective alternative of crystalline wafer-based solar cell is thin-film polycrystalline-based solar cell. This paper reports the numerical analysis of dependency of the solar cell parameters (i.e., efficiency, fill factor, open-circuit voltage and short-circuit current density) on grain size for thin-film-based polycrystalline silicon (Si) solar cells. A minority carrier lifetime model is proposed to do a correlation between the grains, grain boundaries and lifetime for thin-film-based polycrystalline Si solar cells in MATLAB environment. As observed, the increment in the grain size diameter results in increase in minority carrier lifetime in polycrystalline Si thin film. A non-equivalent series resistance double-diode model is used to find the dark as well as light (AM1.5) current–voltage (I-V) characteristics for thin-film-based polycrystalline Si solar cells. To optimize the effectiveness of the proposed model, a successive approximation method is used and the corresponding fitting parameters are obtained. The model is validated with the experimentally obtained results reported elsewhere. The experimentally reported solar cell parameters can be found using the proposed model described here.
机译：太阳能电池/光伏，可再生能源，被评估为传统电能发生器的最有效替代品。基于晶体晶片的太阳能电池的经济有效替代方案是薄膜多晶的太阳能电池。本文报告了太阳能电池参数（即，效率，填充因子，开路电压和短路电流密度）对基于薄膜的多晶硅（Si）太阳能电池的晶粒尺寸的依赖性的数值分析。提出了少数型载体寿命模型，用于在Matlab环境中对薄膜基多晶Si太阳能电池进行谷物，晶界和寿命之间的相关性。如图所示，晶粒尺寸直径的增量导致多晶Si薄膜中的少数载体寿命增加。非等效串联电阻双二极管模型用于找到薄膜的多晶硅Si太阳能电池的暗和光（AM1.5）电流 - 电压（I-V）特性。为了优化所提出的模型的有效性，使用连续的近似方法，并且获得相应的拟合参数。该模型通过在其他地方的实验获得的结果验证。可以使用此处描述的所提出的模型找到实验报道的太阳能电池参数。

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