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首页> 外文期刊>Photovoltaics, IEEE Journal of >Analysis of Fine-Line Screen and Stencil-Printed Metal Contacts for Silicon Wafer Solar Cells
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Analysis of Fine-Line Screen and Stencil-Printed Metal Contacts for Silicon Wafer Solar Cells

机译：硅晶片太阳能电池的细线丝网印刷和模版印刷金属触点分析

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摘要

Primary challenges to fine-line silver printing for solar cells are achieving high aspect ratios and uniform lines with a low level of striations. This paper compares two high-throughput printing technologies, namely, printing by screens versus stencils. A statistical method is introduced to evaluate the quality of the printed front grid based on the distributions of printed metal line profiles, line segment conductance, overall electroluminescence (EL) pattern, and solar cell light current–voltage () characteristics. The model distribution, combined with finite-element modeling to predict realistic cell-level voltage variations, adequately describes all four kinds of characteristics. It predicts well the diverging performance of screen- and stencil-printed solar cells as the line width becomes less than 50 μm. Experimentally, the highest batch average efficiency of 18.8% was achieved on 156 mm × 156 mm p-type monocrystalline silicon solar cells printed with stencils having 30-μm line openings, using only 78 mg of silver paste per cell.
机译：用于太阳能电池的细线银印刷的主要挑战是获得高的长宽比和具有低条纹的均匀线条。本文比较了两种高通量印刷技术，即丝网印刷与模板印刷。引入了一种统计方法，用于根据印刷金属线轮廓的分布，线段电导，整体电致发光（EL）模式以及太阳能电池的光电流-电压（）特性来评估印刷前格栅的质量。模型分布与有限元建模相结合以预测实际的电池级电压变化，可以充分描述所有四种特性。当线宽小于50μm时，它可以很好地预测丝网印刷和模板印刷太阳能电池的发散性能。实验上，在156mm×156mm p型单晶硅太阳能电池上印刷了具有30μm线孔的模版，每个电池仅使用78mg的银浆，实现了最高批次平均效率为18.8％。

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