Controlled nanostructuring via aluminum doping in CuO nanosheets for enhanced thermoelectric performance

摘要: Abstract Copper oxide (CuO) nanosheets (NS) produced by the microwave chemical assisted route were reported to have attractive structural and thermoelectric (TE) properties. They possess non-agglomeration property two-dimensional (2D) ultra-thin NS with a high Seebeck coefficient relatively elevated electrical conductivity. This study controlled nanostructuring of CuO via aluminum (Al) doping has been investigated for its effect on this material's TE performance. Various concentrations in range 0.5–5 mol% incorporated host NS. Increasing concentration dopant was observed systematically reduce size no their crystallinity. Moreover, Al-doped increased, while conductivity kept almost invariant. In sharp contracts, thermal significantly decreased, which results an enhanced figure merit, zT. The zT value increased from around 0.004 pure approximately 0.09 5 mol% sample at room temperature. broad difference reduced heating 673 K, where values recorded 0.2 0.9, respectively. generated powers designed modules (5 mol%) measured. power 7 μW is 5 times higher than that sample. These showed could be promising nanomaterial.