Surfactant-free co-solvent exfoliation strategy of semiconducting quasi-1D Nb2Pd3Se8 nanowires

Abstract

Nb2Pd3Se8, a quasi-one-dimensional (1D) van der waals materials, has gained recent attention due to its intriguing structural, electrical and optoelectrical properties. In this work, we studied co-solvent exfoliation of Nb2Pd3Se8 in water mixtures with ethanol and isopropanol. By adjusting the compositions of co-solvent, the dispersion behavior of Nb2Pd3Se8 was interpreted in terms of surface tension and dielectric constant. This approach is effective to alternate the previous optimal solvent of NMP, which is toxic with high boiling point of 204 °C. The Nb2Pd3Se8 nanowire prepared through co-solvent exfoliation presented high electronic property with an electron mobility of 10.3 cm2 V-1 s-1.