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In this study, we propose a new technology to fabricate pseudo tri-gate vertical (PTGV) MOSFETs without p-n junctions, named junctionless PTGVMOS (JPTGV). According to numerical analysis, the excellent electrical characteristics such as subthreshold swing (S.S.) ~ 60mV/dec, Ion/Ioff ~ 1010, and low interface trap density are all achieved. The device without p-n junctions provides an easier way for...
Capacitance-voltage (C-V) and frequency dependent conductance-voltage (G-V) measurements have been carried out to investigate the charging and discharging effect induced by interface states and nanocrystalline Si (nc-Si) in floating gate MOS structures. Distinct conductance peaks are observed in the G-V curves for the floating gate with and without nc-Si dots. Based on the calculation of interface...
High-quality germanium oxynitride (GeON) gate dielectrics for Ge-based metal-oxide-semiconductor (MOS) devices were fabricated by plasma nitridation of ultrathin thermal oxides on Ge(100) substrates. Although ultrathin oxides with abrupt GeO2/Ge interfaces can be formed by conventional dry oxidation, air exposure results in serious electrical degradation. It was found that plasma nitridation forms...
Normalized Differential Conductance Spectroscopy (NDCS) has been used to investigate the tunneling properties of post soft breakdown SiO2. It is shown that the NDCS is capable of separating various components of tunneling current and determining its corresponding tunnel constants of post SBD SiO2. Therefore, the most important tunneling parameters: the effective mass of tunneling electron in SBD SiO...
Under white-light irradiation, thin film transistors based on copper phthalocyanine (CuPc) exhibited obvious hysteresis effects when applying bi-directional sweeping gate voltage, the hysteresis window comes up to 32 V. This hysteresis effect is the result of those accumulated photogenerated carriers trapped in the interface, which proposed a feasible way to detect the state of the interface between...
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