Nondestructively decorating surface textured silicon with nanorod arrays for enhancing light harvesting (Phys. Status Solidi A 12∕2013)

Authors

  • Wenjing Dong,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
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  • Chanyan Huang,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
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  • Tiaoxing Wei,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
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  • Yun Zhang,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
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  • Kenan Zhang,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
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  • Yan Sun,

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
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  • Xin Chen,

    Corresponding author
    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
    • National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai200083P. R. China

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  • Ning Dai

    Corresponding author
    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai, P. R. China
    • National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai200083P. R. China

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Abstract

image

Minimizing surface reflection is among the key issues for enhancing light collection and therefore increasing the conversion efficiency of solar irradiance to electric energy for photovoltaic (PV) cells. In the study by Dong et al. (pp. 2542–2549), the surface of textured silicon solar cells is nondestructively decorated with ZnO nanorod arrays (ZNAs) in order to harvest more light. Without surface destruction during atomic layer deposition and hydrothermal processes, the ZNA layers are directly grown on the upper surface of commercial silicon cells with textured surface coated with SiNx layer. The scanning electron microscopy images of crystalline silicon (c-Si) and multicrystalline silicon (mc-Si) cells as well as those decorated with ZNAs show that their surfaces have different textured morphology, while the ZNA decorations are designed according to the varying textures of the c-Si and mc-Si cells. Accordingly, the surface reflections of both the decorated c-Si and mc-Si cells significantly reduce, which can be seen from the reflectance curves. Such antireflection decorations will open up more opportunities in feasible and compatible nonreflecting layers towards an optimal light harvesting for photoelectronic devices.

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