Efficiency increase of crystalline silicon solar cells with nanoimprinted rear side gratings for enhanced light trapping
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- 作者：Johannes Eisenlohr ; johannes.eisenlohr@ise.fraunhofer.de" class="auth_mail" title="E-mail the corresponding author ; Nico Tucher ; Hubert Hauser ; Martin Graf ; Jan Benick ; Benedikt Blä ; si ; Jan Christoph Goldschmidt ; Martin Hermle
- 关键词：Silicon solar cells ; Light trapping ; Nanoimprint lithography ; Gratings
- 刊名：Solar Energy Materials and Solar Cells
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：155
- 期：Complete
- 页码：288-293
- 全文大小：1053 K
文摘
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Silicon solar cells with rear side diffractive gratings have been fabricated.
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Fabricated solar cells are electrically planar, but optically structured (“EPOS”).
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The nanoimprinted grating leads to current density gains of up to 1.8 mA/cm2.
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For thinner solar cells (100 µm), the gain increases, in accordance to simulations.
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Also for textured front side the grating leads to a small gain in the EQE.