Patent ID: 6468884
Filing Date: 2002-10-22
Classification: C30B,H01L

Abstract:
A method of forming a silicon-contained crystal thin film comprising:an ion implanting step of implanting hydrogen ions or helium ions into a silicon-contained crystal substrate containing silicon at 10% or more by weight; a void forming step of forming a void in an ion-implanted position of said crystal substrate by heating said crystal substrate subjected to the ion implantation; an epitaxial growth step of immersing the ion-implanted crystal substrate in a melted metal liquid containing silicon, and cooling said liquid to cause epitaxial growth to form a monocrystalline or polycrystalline thin film primarily made of silicon on an ion-injected surface of said substrate; and a dividing step of dividing the crystal substrate provided with the crystal thin film in the void-formed position, wherein the heating of said crystal substrate performed for the void formation in said void forming step is performed by immersing at least the ion-injected surface of said crystal substrate in the melted metal liquid used in said epitaxial growth step.