Low temperature solution synthesis of silicon, germanium and Si–Ge axial heterostructures in nanorod and nanowire form

Abstract

Herein, we report the formation of silicon, germanium and more complex Si–Si_xGe_1−x and Si–Ge axial 1D heterostructures, at low temperatures in solution. These nanorods/nanowires are grown using phenylated compounds of silicon and germanium as reagents, with precursor decomposition achieved at substantially reduced temperatures (200 °C for single crystal nanostructures and 300 °C for heterostructures), through the addition of a reducing agent. This low energy route for the production of these functional nanostructures as a wet chemical in high yield is attractive to meet the processing needs for next generation photovoltaics, batteries and electronics.