Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"charge pumping"”.
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Quantised charge pumping in a perpendicular magnetic field
… related to fundamental constants. Quantised charge transport devices fabricated in semiconductor heterostructure materials are the most promising candidates for a redefinition of the ampere. Our observations of the quantised current produced by a tunable-barrier GaAs/ AlGaAs electron pump in …
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Characterization of high-k layers as the gate dielectric for MOSFETs
… technique and developing a newly improved charge pumping technique called Variable T charged is charge Pumping (VT2CP). The research results are presented in Chapters 3,4 and 5. Chapter 3 characterizes a s-grown electron traps in HfO2/SiO2s tacks. The issues addressed include the impact of …
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The Degradation and Time-dependent Breakdown of P-type Mosfets with a High-k Dielectric
… voltage stress was applied in conjunction with charge pumping, stress induced leakage current, and carrier separation measurements to examine the trap generation phenomena. Of interest in the study was location of the trap generation in the gate stack, whether or not the degradation was gradual, …
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Development of characterization techniques for negative bias temperature instabilities
… focus on investigating the NBTI and the positive charges responsible for it. Modem MOSFETs use gate dielectrics in the nanometer range and the degradation will recover rapidly. To suppress the recovery, high speed characterization technique is needed. In this project the measurement speed has been …
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Negative bias temperature instability (NBTI) experiment
… to NBTI of the devices. For this purpose, a charge pumping experiment and other On-the-Fly techniques at certain temperatures can provide the interface state density and other valuable data. NBTI can impact current technological fabrication processes, such as those provided to the government …
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Development of inversion-mode and junctionless Indium-Gallium-Arsenide MOSFETs
… bandgap and beyond. A multi-frequency inversion-charge pumping approach was proposed to (1) study the traps located at energy levels aligned with the In0.53Ga0.47As conduction band and (2) separate the trapped charge and mobile charge contributions. The analysis revealed an effective mobility …
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Characterization and Modeling of Low Frequency Noise and Dielectric Traps in Scaled MOSFET Devices
… (Current-Voltage), C-V (Capacitance-Voltage), charge pumping etc. NMOS transistors exhibit a higher interface trap density (9.7E10 cm<sup>-2</sup>eV<sup>-1</sup>) than PMOS (5.8E10 cm<sup>-2</sup>eV<sup>-1</sup>). The mean capture cross sections are comparable in these devcies: 3.3E-17 …
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Artificial gauge fields and quantum hall physics in optical lattices
… Chern insulator, including the quantized charge pumping along tailored paths inside the bulk, as well as the controlled population of edge modes. This possibility is due to the fact that it is the artificial vector potentials (in the form of Peierls phases) that are controlled …
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Nonequilibrium green function approach to elastic and inelastic spin-charge transport in topological insulator-based heterostructures and magnetic tunnel junctions
… a contribution to the analysis of the electronic charge and spin transport phenomena that occur at the quantum level in nano-structures. This thesis spans the areas of quantum transport theory through time-dependent systems, electron-boson interacting systems and systems of interest to …
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Experimental investigation of carrier mobility degradation in metal oxide semiconductor field effect transistors of high permittivity gate dielectrics
… in SiO2-based MOSFETs. These include effect of charge scattering centres on the dielectric/Si interface as well as substrate ionized impurities. Also contributing to mobility reduction is phonon scattering, that is, vibration of lattice bonds. In this thesis, samples of high-κ based MOSFETs and …