Patent ID: 7863710
Filing Date: 2011-01-04
Classification: H01L

Abstract:
1. An apparatus, comprising: a non-polar off-oriented silicon substrate, the substrate comprising a resistivity between about 1 Ω-cm to 50 Ω-cm, and the substrate comprising material of a (100) direction off-cut in a range between about 2 degrees to 8 degrees towards a (110) direction; a buffer film comprising InP, InAs, GaAs, AsP, InGaAs, InGaAsP, or combinations thereof epitaxially coupled to the substrate, the buffer film melted by pulsed-laser irradiation and recrystallized to substantially remove dislocations or defects, or combinations thereof, from the buffer film, the buffer film comprising a thickness of about 0.3 micron to about 1 micron, and the laser pulse irradiation comprising a pulse width between about 3 nanoseconds to 300 nanoseconds, a frequency between about 2 Hz to 5 Hz, and an energy between about 0.1 J/cm a first semiconductor film epitaxially grown on the buffer film, the first semiconductor film comprising Ge, A a second semiconductor film epitaxially grown on the first semiconductor film, the second semiconductor film comprising Si, InGaAs, InAs, or InSb, or combinations thereof, the first semiconductor film and the second semiconductor film forming a quantum-well heterostructure channel material for a transistor device.