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In this paper, the reliability of the fluorinated hafnium oxide (HfO2) gate dielectric using novel and CMOS compatible fluorinated silicate glass (FSG) process has been studied comprehensively for the first time. Due to dangling bonds and oxygen vacancies recovery by the fluorine atoms, higher transconductance, smaller stress-induced threshold voltage and interface state degradation are therefore...
In this paper, we investigated the characteristics of Ge junction diodes and gate-last p- and n-metal-oxide-semiconductor field-effect transistors with the atomic-layer-deposited- Al2O3 gate dielectrics. The magnitudes of the rectifying ratios for the Ge p+-n and n+-p junctions exceeded three and four orders of magnitude (in the voltage range of plusmn1 V), respectively, with accompanying reverse...
Reliabilities of high-k stacked gate dielectrics are discussed from the viewpoint of the impact of initial traps in high-k layer. TDDB reliability can be explained by the generated subordinate carrier injection (GSCI) model. While initial traps increase the leakage current, they do not degrade the TDDB reliability. In contrast, the BTI reliability is strongly degraded by initial traps.
Continuous scaling, necessary for enhanced performance and cost reduction, has pushed existing CMOS materials much closer to their intrinsic reliability limits, forcing reliability engineers to get a better understanding of circuit failure. This requires that designers will have to be very careful with phenomena such as high current densities or voltage overshoots. In addition to the reliability issues,...
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...
Transconductance (gm) enhancement in n-type and p-type nanowire field-effect-transistors (nwFETs) is demonstrated by introducing controlled tensile strain into channel regions by pattern dependant oxidation (PADOX). Values of gm are enhanced relative to control devices by a factor of 1.5 in p-nwFETs and 3.0 in n-nwFETs. Strain distributions calculated by a three-dimensional molecular dynamics simulation...
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