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The optical properties of silicon nanowire films fabricated on bulk Si and glass substrates are reported. The total reflectance of aligned nanowire arrays formed by a wet etch process on bulk Si is lower than the control over all wavelengths below the bandgap, varying from ~1% at 300 nm to les 10% at 1,000 nm. Similar results are observed for nanowire thin films. The observed reflectance is related...
The goal of this work is to fabricate and study wide gap CuGaSe 2 solar cells to be used as top cell of a mechanically stacked tandem device. CuGaSe2 (CGS) absorber thin films are prepared by co-evaporation in a three stage process onto Mo/soda-lime glass substrates and onto different transparent conductive oxides (TCOs): SnO2:F (FTO) and ln2O3:Sn (ITO). Laser light scattering (LLS) is used as an...
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