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In this paper, we demonstrate TaN/fluorinated HfO2 CMOS devices, focusing on symmetry and asymmetry fluorine incorporation at top or bottom HfO2 interfaces. 16% permittivity enhancement, 65% and 91% mobility increases for electron and hole, respectively, under high electric field was achieved. Reliability of n- and p-MOSFET was improved 3 orders and 8% for GIDL and hot carrier immunity, respectively...
The positive bias temperature instability (PBTI) characteristics of contact-etch-stop-layer (CESL)-strained HfO2 nMOSFET are thoroughly investigated. For the first time, the effects of CESL on an HfO2 dielectric are investigated for PBTI characteristics. A roughly 50% reduction of VTH shift can be achieved for the 300-nm CESL HfO2 nMOSFET after 1000-s PBTI stressing without obvious HfO2/Si interface...
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