Abstract
According to the reduction of gate oxide thickness in Metal-Oxide-Semiconductor (MOS) devices, the gate oxide degradation caused by the stored charge during magnetized high-density plasma etching becomes a serious problem. The gate oxide degradation and the breakdown are brought about due to the nonuniform plasma radiation by the uneven magnetic field profile. Therefore, the flat equi-magnetic field profile suppresses the gate oxide degradation during electron cyclotron resonance (ECR) plasma etching.
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