Abstract
In this work, compared with the direct wafer bonding by surface activated bonding (SAB) at room temperature, SiC-SiO2 wafer bonding was effectively enhanced by using a Si nano layer deposited on SiO2 such as improvement of fracture surface energy and reduction of bonding void. A uniform seamless bonding in bonded region was confirmed by interface analysis. The strong bonding confirmed the strong bonding of SiC-Si in previous research and also demonstrated a strong adhesion of Si nano layer deposited on SiO2 substrate, which is different from direct wafer bonding of Si-SiO2 by SAB. The possible mechanism of strong adhesion was investigated by molecular dynamic simulation.
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