The electronic properties of nano-textured silicon were investigated with respect to photovoltaic applications. An antireflective nano-structured surface was generated by metal-catalyzed wet chemical etching. By optimizing the etch conditions, the reflectivity of the nano-textured surface could be strongly reduced to levels below 5%. The resulting increased effective surface area, however, leads to an elevated surface recombination of photoexcited charge carriers. Besides the systematic study of surface defects, emphasis was put on the surface passivation of the nano-textured silicon. The passivated nano-textures were implemented in different solar cell structures and the influence on the electrical properties was investigated.
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The electronic properties of nano-textured silicon were investigated with respect to photovoltaic applications. An antireflective nano-structured surface was generated by metal-catalyzed wet chemical etching. By optimizing the etch conditions, the reflectivity of the nano-textured surface could be strongly reduced to levels below 5%. The resulting increased effective surface area, however, leads to an elevated surface recombination of photoexcited charge carriers. Besides the systematic study of...
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