Rapid solid-state metathesis routes to nanostructured silicon-germainum

A method of forming nanostructured silicon comprising the steps of:

• (a) grinding a stoichiometric mixture of silicon tetraiodide SiI4 and an alkaline earth metal silicide into a homogeneous powder, and
• (b) reacting the silicon tetraiodide SiI4 with the alkaline earth metal silicide.

A method of forming nanostructured silicon comprising the step of

• (a) ball milling a mixture of silicon tetraiodide SiI4 and an alkaline earth metal silicide into a homogeneous powder, and
• (b) reacting the silicon tetraiodide SiI4 with the alkaline earth metal.

A method of forming nanostructured silicon-germanium comprising the steps of:

• (a) combining a stoichiometric mixture of SiI4 and a germanium based precursor into a homogeneous powder, and
• (b) initiating the reaction between the SiI4 and the germanium based precursor.

A method of forming nanostructured silicon comprising the steps of:

• (a) combining a stoichiometric mixture of SiI4 and an alkaline earth metal silicide into a homogeneous powder,
• (b) adding tin to the homogeneous powder, and
• (c) initiating a reaction between the SiI4 and the alkaline earth metal silicide.

A method of forming nanostructured silicon comprising the steps of:

• (a) grinding a stoichiometric mixture of SiI4 and an alkaline earth metal silicide into a homogeneous powder,
• (b) adding tin to the homogeneous powder, and
• (c) reacting the SiI4 with the alkaline earth metal silicide.

A method of forming nanostructured silicon comprising the step of

• (a) ball milling a mixture of SiI4 and an alkaline earth metal silicide into a homogeneous powder,
• (b) adding tin to the homogeneous powder, and
• (c) reacting the SiI4 with the alkaline earth metal silicide.