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  • Title: Nearly zero reflectance of nano-pyramids and dual-antireflection coating structure for monocrystalline silicon solar cells.
    Author: Chang HS, Jung HC.
    Journal: J Nanosci Nanotechnol; 2011 Apr; 11(4):3680-3. PubMed ID: 21776753.
    Abstract:
    The effect of two-step surface treatment on monocrystalline silicon solar cells was investigated. We changed the nanostructure on pyramidal surfaces by wet nano-texturing so that less light is reflected. The two-step nano-texturing process reduces the average reflectance to about 4% in the 300-1100 nm wavelength region. The use of an antireflection coating resulted in an effective reflectance of 1%. We found that the reflectance obtained by wet nano-texturing was lower than that obtained by conventional alkaline texturing. Thus, we can expect a further increase in the efficiency of silicon solar cells with two-step nano-texturing by a wet chemical process.
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