Silicon nanowire-based solar cells on glass: synthesis, optical properties, and cell parameters.

Sivakov, V; Andrä, G; Gawlik, A; Berger, A; Plentz, J; Falk, F; Christiansen, S H · Nano Lett · 2009

basic_science · Level V

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Abstract

Silicon nanowire (SiNW)-based solar cells on glass substrates have been fabricated by wet electroless chemical etching (using silver nitrate and hydrofluoric acid) of 2.7 microm multicrystalline p(+)nn(+) doped silicon layers thereby creating the nanowire structure. Low reflectance (<10%, at 300-800 nm) and a strong broadband optical absorption (>90% at 500 nm) have been measured. The highest open-circuit voltage (V(oc)) and short-circuit current density (J(sc)) for AM1.5 illumination were 450 mV and 40 mA/cm(2), respectively at a maximum power conversion efficiency of 4.4%.