Structure simulation of screen printed local back surface field for rear passivated silicon solar cells

Daming Chen, Zongcun Liang, Yang Yang, Hui Shen, Yang Liu
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引用次数: 2

Abstract

The research of this paper was focused on the simulation of screen printed Local Back Surface Field (LBSF) for the rear passivated solar cells. The thickness, homogeneity and cavity effect were studied. According to the simulation results, the thickness of LBSF should be at least 2 μm in order to gain high efficiency of solar cells. If LBSF was thick enough, the homogeneity of LBSF had less impact on the cell performance. However, the incomplete formation of LBSF layer would drastically decrease the open circuit voltage (Voc) of cells. The thinnest part of an inhomogeneous LBSF should be 1 to 2 μm at the least. As for the influence of the cavities inside the local contacts, a single long cavity would cause a power loss of 8.20% to 11.15% relatively, and the cavity group made up of many long cavities would cause a power loss of about 11.53% to100% relatively.
后钝化硅太阳电池丝网印刷局部后表面场的结构模拟
本文主要研究了后钝化太阳能电池丝网印刷局部后表面场的模拟。研究了厚度、均匀性和空腔效应。仿真结果表明,为了获得太阳能电池的高效率,LBSF的厚度应至少为2 μm。如果LBSF足够厚,则LBSF的均匀性对电池性能的影响较小。然而,LBSF层的不完全形成会大大降低电池的开路电压(Voc)。非均匀LBSF的最薄部分不小于1 ~ 2 μm。对于局部触点内部空腔的影响,单个长空腔的相对功率损耗为8.20% ~ 11.15%,由多个长空腔组成的空腔组的相对功率损耗约为11.53% ~ 100%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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