We investigated the fabrication of large-area (cm2) nanostructured glasses for solar\ncell modules with hydrophobic and hydrophilic properties using soft lithography and colloidal\nlithography. Both of these techniques entail low-cost and ease of nanofabrication. We explored the use\nof simple 1D and 2D nanopatterns (nanowires and nanocones) and the effect of introducing disorder\nin the nanostructures. We observed an increase in the transmitted light for ordered nanostructures\nwith a maximum value of 99% for wavelengths >600 nm when ordered nanocones are fabricated on\nthe two sides of the solar glass. They produced an increment in the efficiency of the packaged solar\ncell with respect to the glass without nanostructures. On the one hand, the wettability properties\nshowed that the ordering of the nanostructures improved the hydrophobicity of the solar glasses and\nincreased their self-cleaning capacity. On the other hand, the disordered nanostructures improved\nthe hydrophilic properties of solar glasses, increasing their anti-fogging capacity. The results show\nthat by selecting the appropriate nanopattern, the wettability properties (hydrophobic or hydrophilic)\ncan be easily improved without decreasing the efficiency of the solar cell underneath.
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