Facile synthesis of bilayer carbon/Ni3S2 nanowalls for a counter electrode of dye-sensitized solar cell
By Wasan Maiaugree and Apishok Tangtrakarn and Seksan Lowpa and Nattawat Ratchapolthavisin and Vittaya Amornkitbamrung
Published in Electrochimica Acta
NULL
2015
Abstract
A bilayer carbon coated Ni3S2 composite nanowall (carbon/Ni3S2) film was first used as a counter electrode for a dye-sensitized solar cell (DSSC). The carbon/Ni3S2 film was synthesized by a chemical bath deposition and an arc evaporation process. A \DSSC\ with Ni3S2 composite counter electrode exhibited an efficiency of 8.40 %, which slightly exceeded that of a Pt (8.38 %). Moreover, bilayer carbon/Ni3S2 nanowall further increased photovoltaic conversion efficiency to 9.64 %. Such dramatic improvement of solar efficiency using a Pt-free composite made of carbon/Ni3S2 nanowall was due to the large surface area of the nano structure and their good co-electrocatalytic activity.
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