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Post-black etching on emitter to improve performance of multi-scale texture silicon solar cells

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Abstract

A simple, low-cost, post-black etching process atop the random pyramidal emitter has been proposed and investigated. The multi-scale texture is achieved by combining nanoporous layer formed by the post-black etching with micron-scale pyramid texture. Compared to the pre-black etched Si solar cells, our experiments clearly show the advantage of post-black etched texturing: it enables high blue response and improved conversion efficiency. As a result, the enhancement of 7.1 mA/cm2 on the short-circuit current density and improvement of 31 % in the conversion efficiency have been reached.

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Acknowledgments

This work is supported by Chinese Nature Science Foundation Committee (No. 11074066) and Henan Provincial Basic and Frontier Project (No. 132300410248).

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Authors and Affiliations

  1. Henan Key Laboratory of Photovoltaic Materials, College of Physics and Electrics Engineering, Henan Normal University, Xinxiang, 453007, China

    Yurong Jiang, Haigang Yang, Weiwei Cao, Guangna Wang, Heng Ma & Fanggao Chang

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  1. Yurong Jiang
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  2. Haigang Yang
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  3. Weiwei Cao
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  4. Guangna Wang
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  5. Heng Ma
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  6. Fanggao Chang
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Correspondence to Yurong Jiang or Fanggao Chang.

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Jiang, Y., Yang, H., Cao, W. et al. Post-black etching on emitter to improve performance of multi-scale texture silicon solar cells. Appl. Phys. A 116, 1409–1414 (2014). https://doi.org/10.1007/s00339-014-8247-0

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  • DOI: https://doi.org/10.1007/s00339-014-8247-0

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