Abstract
In this paper, we focused on synthesizing hexagonal SnS2 nanoparticles with perfect crystallinity as a replacement of Pt catalyst conventionally used in the counter electrode (CE) of a dye-sensitized solar cell (DSSC). When the conditions of the initial reaction were changed, the SnS2 nanoparticles growth along the (001) facet with various preferred orientations was obtained. The highest power conversion efficiency (PCE) of our materials achieved 6.3%, while the efficiency of Pt based was 6.67%. From the electrochemical impedance spectroscopy analysis, we found that our dye-sensitized solar cell offers lower interface resistance between the electrolyte and the counter electrode. Our work obtained the DSSC with the power-conversion efficiency and stable property, and it also provided routes for preparing low-cost DSSC using inorganic nanostructure as CE.
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