Abstract
We have successfully demonstrated epitaxial growth of an InP layer to fabricate an InGaAsP/InP buried heterostructure (BH) on Si substrate, in which a thin InGaAsP-based active layer is directly bonded to SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /Si substrate before fabricating the BH. An O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> plasma-assisted wafer bonding is used to combine a 2-inch Si substrate with 1-μm thick thermal oxide and a 2-inch InP substrate with the active layer. We confirm that the crystal quality is not significantly degraded compared with that on InP substrate. These results indicate that the proposed fabrication method is suitable for integrating III-V materials on Si substrate.
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