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Bias-temperature instabilities (BTIs) are investigated for n- and p-substrate 4H-SiC metal–oxide–semiconductor (MOS) capacitors. The midgap voltage shifts positively under positive bias stress at high temperatures for n-substrate capacitors with 67.5-nm nitrided oxides and shifts negatively under negative bias for p-substrate capacitors with 55-nm nitrided oxides. The magnitudes of the...
Polarities of plasma charging damage in n- and p-channel MOSFETs with Hf-based high-k gate stack (HfAlOx/SiO2) were studied for two different plasma sources (Ar-and Cl-based gas mixtures), and found to depend on plasma conditions, in contrast to those with conventional SiO2. For Ar-plasma, which was confirmed to induce a larger charging damage, both n- and p-ch MOSFETs with high-k gate stacks suffer...
Since the very beginning of the flash memory era, the market has been dominated by the floating gate technology. However, as floating gate flash continues along a very steep scaling path, more and more barriers start to appear, limiting further scaling possibilities of the technology. At the same time, other concepts are preparing to take over. This paper concentrates on the prospect of high-k materials...
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