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We have investigated the growth and crystalline properties of tensile-strained Ge and Ge1-xSnx heteroepitaxial layers for high-mobility channels. The low temperature growth and the large misfit strain between Ge1-xSnx and Si leads to the high density of defects such as vacancy in Ge1-xSnx layers. They effectively enhance the propagation of misfit dislocations and the strain relaxation with suppressing...
In this work, two kinds of thermal annealing methods were used to process the silicon wafer by Ge ion bombardment in two steps, dose of 7×1016/cm2 with 150KeV and dose of 2.72×1016/cm2 with 50KeV respectively. In order to control the defects density and Ge distribution in SiGe layer, furnace annealing (FA) and rapid thermal annealing (RTA) schedules were used. It has been found that the FA after ion...
We report here the use of a novel cluster carbon (C7H7+) implant along with n-type source drain dopant implants (As and P2) to form an embedded Silicon-Carbon (Si:C) layer. The implanted wafers were annealed using millisecond flash anneal (fRTP) followed by a post impulse spike RTP anneal (iRTP) for deactivation studies. The percentage of substitutional carbon ([C]subs) in the formed Si:C layer is...
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