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首页> 外文期刊>Journal of Materials Research >Kerfless exfoliated thin crystalline Si wafers with Al metallization layers for solar cells
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Kerfless exfoliated thin crystalline Si wafers with Al metallization layers for solar cells

机译：用于太阳能电池的具有Al金属化层的无缝剥落薄晶体硅晶片

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摘要

We report on a kerfless exfoliation approach to further reduce the costs of crystalline silicon photovoltaics making use of evaporated Al as a double functional layer. The Al serves as the stress inducing element to drive the exfoliation process and can be maintained as a rear contacting layer in the solar cell after exfoliation. The 50-70 μm thick exfoliated Si layers show effective minority carrier lifetimes around 180 μs with diffusion lengths of 10 times the layer thickness. We analyze the thermo-mechanical properties of the Al layer by x-ray diffraction analysis and investigate its influence on the exfoliation process. We evaluate the approach for the implementation into solar cell production by determining processing limits and estimating cost advantages of a possible solar cell design route. The Al-Si bilayers are mechanically stable under processing conditions and exhibit a moderate cost savings potential of 3-36% compared to other c-Si cell concepts.
机译：我们报告了一种无缝隙剥落方法，可进一步降低利用蒸发的Al作为双重功能层的晶体硅光伏电池的成本。 Al用作驱动剥落过程的应力诱导元素，并且可以在剥落之后保持为太阳能电池中的后接触层。厚度为50-70μm的剥落硅层显示有效的少数载流子寿命约为180μs，扩散长度为层厚的10倍。我们通过X射线衍射分析来分析Al层的热机械性能，并研究其对剥离过程的影响。我们通过确定工艺限制并估算可能的太阳能电池设计路线的成本优势，来评估实现太阳能电池生产的方法。 Al-Si双层在加工条件下机械稳定，与其他c-Si电池概念相比，具有3-36％的中等成本节约潜力。

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  • 来源
    《Journal of Materials Research》 |2015年第21期|3227-3240|共14页
  • 作者

    Raphael Niepelt; Jan Hensen; Verena Steckenreiter; Rolf Brendel; Sarah Kajari-Schoeder;

  • 作者单位

    Department of Photovoltaics, Institute for Solar Energy Research Hamelin (ISFH), D-31860 Emmerthal, Germany;

    Department of Photovoltaics, Institute for Solar Energy Research Hamelin (ISFH), D-31860 Emmerthal, Germany;

    Department of Photovoltaics, Institute for Solar Energy Research Hamelin (ISFH), D-31860 Emmerthal, Germany;

    Department of Photovoltaics, Institute for Solar Energy Research Hamelin (ISFH), D-31860 Emmerthal, Germany Institut fuer Festkoerperphysik, Leibniz Universitaet Hannover, D-30167 Hannover, Germany;

    Department of Photovoltaics, Institute for Solar Energy Research Hamelin (ISFH), D-31860 Emmerthal, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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