Crystallization of amorphous silicon by reconstructive transformation utilizing gold

A gold layer one order of magnitude thinner than the thickness of an amorphous silicon layer in intimate contact leads to the dissolution of the amorphous silicon into the liquid and the subsequent precipitation of crystalline Si as the liquid phase propagates into the amorphous phase at above eutectic temperatures. The crystalline Si precipitate has grain sizes of the order of 6 μm. The Si/Au liquid is very sensitive to constitutional supercooling and subsequent crystallization.