Patent ID: 7361574

Claim:
A method for transferring a single-crystal silicon (Si) film to a glass substrate, the method comprising: depositing a sacrificial germanium (Ge)-containing film overlying a Si wafer; forming a single-crystal Si film overlying the sacrificial Ge-containing film; etching the single-crystal Si film and underlying sacrificial Ge-containing film; in response to the etching, forming solution channels between single-crystal Si film regions having sidewalls; forming a hydrophilic film surface on the single-crystal Si; bonding the hydrophilic Si film surface to a transparent substrate, forming a bonded substrate; immersing the bonded substrate in a Ge etching solution, inducing Ge etching solution into the solution channels; etching the sacrificial Ge-containing film; and, separating the transparent substrate from the Si wafer, forming a transparent substrate with an overlying single crystal Si film.