Dissertations / Theses on the topic 'Transistors MOSFET'
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Bakhtiar, Hazri CHARLES JEAN PIERRE. "CARACTERISATION DE STRUCTURES MOS SUBMICRONIQUES ET ANALYSE DE DEFAUTS INDUITS PAR IRRADIATION GAMMA. EXTRAPOLATION AUX DEFAUTS INDUITS DANS LES OXYDES DE CHAMP DES TRANSISTORS BIPOLAIRES /." [S.l.] : [s.n.], 1999. ftp://ftp.scd.univ-metz.fr/pub/Theses/1999/Bakhtiar.Hazri.SMZ9934.pdf.
Full textGuérin, Chloé. "Etude de la dégradation par porteurs chauds des technologies CMOS avancées en fonctionnement statique et dynamique." Aix-Marseille 1, 2008. http://www.theses.fr/2008AIX11041.
Full textIn the last technologies, dimension reduction is performed at constant bias which means an increase of the MOSFET lateral electrical field. Reliability risks in term of hot carriers are coming back. It is very important to understand the hot carrier degradation physical root causes to insure the best compromise between performance and reliability. After studying numerous stress biases, temperatures, oxide thicknesses and lengths, we established a new physical formalism based on both carrier energy and number. This double effect translates in a three degradation mode competition dominated by each of the modes depending on the energy range. At high energy, the degradation is due to a single carrier interaction with Si-H bonds (mode 1). But when the energy decreases, carrier number begins to dominate first trough Electron-Electron interactions (mode 2) and particularly at very low energy where we put forward that degradation increases due to bond multiple vibrational excitation with cold carriers (mode 3). This new modelling allows a better lifetime extrapolation at nominal biases. Applied to degradation under digital signals, it also enables a rigorous estimation of the degradation ratio between alternative and continuous current (AC-DC). Then new design guidelines concerning frequency, fanOut and rise time have been evidenced. Finally, this new modelling is now included in Design-in Reliability simulators to know precisely circuit bloc hot carrier degradation
Munteanu, Daniela. "Modélisation et caractérisation des transistors SOI : du pseudo-MOSFET au MOSFET submicronique ultramince." Grenoble INPG, 1999. http://www.theses.fr/1999INPG0104.
Full textRigaud, Fabrice. "Etude et conception des structures de test et méthodes d'analyse pour les technologies CMOS." Aix-Marseille 1, 2010. http://www.theses.fr/2010AIX1A083.
Full textBecause of the constant transistors size reduction, it becomes more and more difficult to obtain good yields. The aim of this work is to propose tools to speed up the yield ramp up of CMOS technologies. These tools consist of test circuit design, combined with test and analysis methods. Three kinds of test structure are analyzed in this work: logic TEG, a test macro-cell and a hybrid TEG. The analyzed logic TEG are compound of inverter chains and allow to detect defects and process variations. Defects can also be localized in order to ease their analysis. The test macro-ceIl studied contains an "oscillating" SRAM memory array which is able to oscillate. The SRAM mode allows detecting and localizing of defects present on the memory array. In comparison with logic TEG, the probability to catch defects is more important thanks to the structure size. The oscillating mode allows, thanks to different interconnection configurations of memory cells, to characterize process variations. The last proposed structure is a hybrid TEG which consists of several ring oscillators with different layout configurations. A numeric bloc is also embedded, allowing to measure oscillating frequencies up to 1. 5GHz and to restitute them on a numeric output. An analysis method is then developed in order to retrieve values of parameters previously chosen as a function of oscilIating frequencies. Ln a fust time, the method is validated by simulation. Then, some wafers with the TEG embedded on are tested. The test shows tbat the learning performed by simulation has to be executed on silicon to obtain expected results
Tsormpatzoglou, Andreas. "Caractérisation et modélisation des composants MOS à multiples grilles nanométriques." Grenoble INPG, 2009. http://www.theses.fr/2009INPG0143.
Full textThe subject of the PhD is focused on theoretical and experimental studies ofnanoscale multi-gate Metal Oxide Semiconductor Field Effect Transistors. The theoretical part is orientated towards the derivation of analytical expressions for the potential distribution within the channel of the transistors, from which characteristic parameters ofthe transistors are derived. The final aim of the work is to obtain analytical compact expressions for the drain current, valid in aH regions of operation. First, symmetrical Double-Gate MOSFETs are studied, whereas the study of all other types of multi-gate MOSFETs (triple-gate and gate-all-around) is based on the derived model of DG MOSFETs. For the experimental part, the transfer characteristics of single-FinFETs and 5-FinFETs were measured at room temperature. For analysis of the experimental data, numerical simulations were performed to verify the theoretical speculations and optimize the device performance
Yojo, Leonardo Shimizu. "Estudo, caracterização elétrica e modelagem de transistores BE (Back Enhanced) SOI MOSFET." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-04052018-150633/.
Full textThe aim of this work is the study, the electrical characterization and the modeling of the new transistor that was developed and fabricated in the Laboratório de Sistemas Integráveis (LSI) at University of Sao Paulo (USP). It was named BE (Back Enhanced) SOI MOSFET. This innovative device has the advantage of a simple fabrication (only well-known processes are required to build it and there is no need of any doping step) and it has a reconfigurable operation (it can act as a n-type MOS transistor or as a ptype MOS transistor depending only on substrate bias). The substrate voltage (VGB) is responsible for the formation of an electron (VGB>0) or a hole (VGB<0) channel at the back interface of the silicon, where the drain current flows. The patent for it was required at the National Industrial Property Institute under the number BR 10 2015 020974 6. Electrical measurements and numerical simulations were performed to better understand its functioning principle and the characteristics that enable its reconfigurability. Two different fabrication splits were analyzed. Beside their thicknesses, the main difference between them is the drain and source metal electrode (aluminum in the first split and nickel in the second one). The one with aluminum electrodes resulted in Ohmic contacts after thermal processing, that favored the formation on the p-type transistor because of the nature of the used element. It was observed a variation of the threshold voltage (up to 1.52mV/ºC) and a mobility degradation (seen through the transconductance behavior) as a function of the temperature (from 25ºC to 125ºC), resulting in a zero-temperature coefficient (ZTC) bias point in this device. In this bias condition point, the drain current is almost constant as a function of the temperature, which is a good characteristic especially for analog circuits. The second split has Schottky drain and source contacts, in which appreciable current levels were obtained for both n-type transistors (order of magnitude of nA in the measured bias conditions) and p-type transistors (order of magnitude of ?A). The drain current of this device showed a particular behavior where the drain current stabilizes from a certain gate voltage. In this condition, the BE SOI MOSFET does not act as a conventional transistor anymore and its current is proportional to the substrate bias. Measurements as a function of the temperature were performed in the device too. It was observed an increase of the drain current, differently from the first split, due to the reduction of the source and drain contacts resistances as a function of the temperature. This resulted in the absence of the ZTC point. Finally, the operation of an inverter circuit using BE SOI MOSFET transistors was implemented, even if the type of the transistors were switched. This result shows the flexibility of operation of the transistor, in other words, it is possible to change its type as a function of the substrate bias.
Lin, Xinnan. "Double gate MOSFET technology and applications /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?ECED%202007%20LIN.
Full text李華剛 and Eddie Herbert Li. "Narrow-channel effect in MOSFET." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1990. http://hub.hku.hk/bib/B31209312.
Full textPeters, Chris (Christopher Joseph) Carleton University Dissertation Engineering Electrical. "MOSFET based gamma radiation detector." Ottawa, 1992.
Find full textLallement, Christophe. "Modèle analytique à une dimension du transistor MOSFET de puissance prenant en compte les interactions thermoélectriques /." Paris : École nationale supérieure des Télécommunications, 1994. http://catalogue.bnf.fr/ark:/12148/cb35706674x.
Full textRodriguez, Santiago Noel. "Caractérisation, modélisation et simulation des transistors SOI MOSFET décananométriques." Grenoble INPG, 2008. http://www.theses.fr/2008INPG0035.
Full textLn this work, the impact and challenges of the decananometric miniaturization of today shrinking CM OS devices, fabricated on SOI and bulk Si, are investigated. The inclusion of quantum effects to accurately describe the behavior of the MOS transistors with single or multiple gates is studied. Poisson and SchrOdinger equations are self-consistently solved in several cases of interest showing the consequences of the physical mechanisms when the decananometric limit is achieved. Among various effects, the carrier quantization, charge centroids, darks spaces, polysilicon depletion, remote scattering mechanisms effects. . . Are reported and modeled. The electrical characterization techniques both at the wafer level and device level are revisited and studied in the framework of today 4Snm technological node. Recent results, obtained using the pseudo-MOSFET characterization technique on as-fabricated wafers, are explained by means of numerical simulations. The reliable Y-function is extended for double channel devices and used ta reveal the beneficial effect of volume inversion, for the first time from usual static characteristics. For many years, the mobility has been a hot issue surrounded by a lot of research effort. This struggle has continued until nowadays when the technology is approaching the end of the Roadmap. Ln this work, two conventional technology-compatible techniques are exploited as mobility boosters through Monte Carlo simulation: alternative crystallographic orientations for the device architecture and the use of strained silicon as channel material. This synopsis of the Ph. D. Dissertation is not a closed work, since it rather establishes some of the guidelines and problems ta deal with in a short term future
Tauk, Rabih. "Mobilité électronique et détection Terahertz dans les transistors ultimes." Montpellier 2, 2007. http://www.theses.fr/2007MON20033.
Full textPicard, Cyrille. "Utilisation des transistors MOS à effet de champ de type COTS en environnement radiatif ionisant." Metz, 2000. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2000/Picard.Cyrille.SMZ0040.pdf.
Full textCousin, Bastien. "Modélisation compacte de transistors à effet de champ nanofils pour la conception de circuits." Grenoble INPG, 2010. http://www.theses.fr/2010INPG0064.
Full textThe aim ofthis the sis is to develop a compact model for the cylindrical GAA MOSFET transistor. The objective is to reproduce the electrical behavior of the transistor through a predictive model which could be used for circuit simulations. The transistor is considered first as an ideal device that is to say without any parasitic effects in order to form the model core. Subsequently, the study focuses on the modeling of quantum-mechanical effects. A quantum correction, which takes into account both structural and electrical confinement of carriers in silicon, is then proposed and implemented into the model core. Afterwards, the study concerns the modeling of short channel effects, which are associated to the reduction of the transistor gate length. Moreover, several parasitic effects such as gate leakage currents, GIDL, series resistance and mobility degradation are modeled separately and implemented into the model core. Finally, experimental data measurements lead to the validation of the whole compact model
Gallon, Claire. "Architectures avancées de transistors CMOS SOI pour le nœud 32 nm et en deça : films ultra-fins, contraintes mécaniques, BOX mince et plan de masse." Grenoble INPG, 2007. http://www.theses.fr/2007INPG0063.
Full textThe increasing needs in terms of perfonnance and scaling for the next CMOS technological nodes make SOI teehnology one of the main alternatives for usuaI bulk devices. Indeed, thanks to their specifie architecture, thin film devices have demonstrated a significative improvement of short channel effect control, compared to bulk. However, in order ta satisfy next technological node requirements, it will be mandatory to overcome actuallimits of SOI devices. The work presented in this PhD 1S thus centred around MOSFETs fabricated on SOI substrates,and more specifically on fully depleted devices. This study foeuses on two axes: evaluation of the impact of process induced mechanical strain on FD SOI electrical performances and optimization of short channel effect control thanks to a new architecture introduction
Rangel, Ricardo Cardoso. "Sequência simples de fabricação de transistores SOI nMOSFET." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-12122014-153226/.
Full textIn this work is developed in an unprecedented way in Brazil a simple process of manufacturing transistors FD SOI nMOSFET (Fully-Depleted Silicon-On-Insulator) with gate polysilicon, to serve as the basis for future developments and also with the purpose of education in microelectronics. A sequence of manufacturing steps necessary for obtaining FD SOI nMOSFET device is proposed, using only three photolithographic steps and using the buried oxide, intrinsic to SOI technology such as field region, aiming to get the simplest possible and efficient process. All the detailed manufacturing steps performed procedures are presented. To obtain the threshold voltage of 1V samples with 2 different doses of ion implantation (1.0x1013cm-2 and 1.2 x1013cm-2) were fabricated. These doses resulted in threshold voltages (VTH) of 0.72 V and 1.08 V, respectively. As expected, mobility independent of field (0) is higher in the sample with the lowest dose, 620cm²/Vs, and for the higher dose, 460cm²/Vs. The subthreshold slope is calculated by obtaining experimental capacitive coupling factor () 0.22, for both doses and results in 73mV/déc. The intrinsic voltage gain (AV) was higher in the sample with a higher dose due to lower output conductance, 28dB against 26dB to the lowest dose, to the transistor with L = W = 40m and 12m. This made it possible to implement a simple sequence of manufacturing SOI transistors with relevant electrical results and with only 3 steps photolithographic important fact to enable their use in training human resources for microelectronics.
Budihardjo, Irwan Kukuh. "A charge based power MOSFET model /." Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/5975.
Full textGuerfi, Youssouf. "Réalisation et caractérisation de transistors MOS à base de nanofils verticaux en silicium." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30253/document.
Full textIn order to further downscaling of the MOS transistors, the semiconductor industry has anticipated the limitations of miniaturization by the introduction of new materials and new architectures. The advent of triple gate structures (FinFET) allowed mastering the short channel effects and further miniaturization efforts (14 nm technology node in 2014). The ultimate case to the electrostatic control of the gate on the channel is given by a gate completely surrounding the device channel. For this purpose, Gate All Around (GAA) nanowire transistor is considered as the most suitable structure for technology nodes below 7 nm. In this thesis, a large scale process for the realization of miniaturized MOSFETs based on vertical silicon nanowires has been developed. Firstly, the vertical nanowires were made by a top down approach by the transfer by etching of hard mask made of Hydrogen silsesquioxane (HSQ) resist created at low voltage electron beam lithography. An original design strategy called "star" was developed to define perfectly circular nanowires. Si nanowires are obtained by plasma etching then thinned by sacrificial wet oxidation. This method allows obtaining vertical Si nanowires with perfectly anisotropic walls, a perfect reproducibility and a maximum yield. The implementation of the MOSFETs on the nanowire network was done by successive engineering of nanoscale thin films (conductive and dielectric). In this context, an innovative process for producing insulation layers in HSQ by controlled chemical etching showed excellent flatness associated with surface roughness of less than 2 nm. Finally, a method using conventional UV photolithography has been developed to achieve the nanometer gate length transistor. These devices have demonstrated excellent electrical performances with conduction currents superior than 600 µA/µm and excellent control of short channel effects (subthreshold slope of 95 mV/dec and DIBL of 25 mV/V) despite extreme miniaturization of the gate length (15 nm). Finally, we present a first proof of concept of a CMOS inverter based on vertical nanowires technology
Bakhtiar, Hazri. "Caractérisation de structures MOS submicroniques et analyse de défauts induits par irradiation gamma : extrapolation aux défauts induits dans les oxydes de champ des transistors bipolaires." Metz, 1999. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1999/Bakhtiar.Hazri.SMZ9934.pdf.
Full textRazafindrakoto, Mirijason Richard. "Modèle hydrodynamique de transistor MOSFET et méthodes numériques, pour l'émission et la détection d'onde électromagnétique THz." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS035/document.
Full textDue to its interesting properties, the electromagnetic THz frequency range may lead to numerous technological applications, ranging from imaging to spectroscopy or even communications. However, technological constraints prevented the efficient emission and detection of such waves with conventional electronics, leading to the idea of the terahertz gap. In the last decades, multiple novel solutions to resolve this gap have been proposed. Amongst these, one may find the use of simple field effect transistors as the most promising one. Their production benefits from currently available CMOS technology thus drastically decreasing the fabrication cost of such a device while allowing it to be easily integrated within electronic circuits. The mechanism behind the emission and detection is the interaction between THz electromagnetic radiations and current oscillations, that is plasma waves, in the transistor's channel. This channel forms a cavity for plasma oscillations, hence, the device may act either resonantly or non-resonantly, depending on various parameters. This thesis deals with the numerical simulation of the transistor in different regimes using hydrodynamical models. These models account for multiple phenomena that have been considered in previous theoretical studies. Some theoretical results on both the emission and detection of THz radiation are presented. In the non-resonant case, we study how one can increase the linear regime of detection. In the resonant case, we show the existence of unexpected resonance frequencies, enlarging the detection spectrum of such detectors
Trabelsi, M'Hamed. "Caractérisation des transistors à nanocristaux de silicium et des transistors SON par les techniques de bruit basse fréquence et de bruit télégraphique." Lyon, INSA, 2009. http://theses.insa-lyon.fr/publication/2009ISAL0003/these.pdf.
Full textThe continuous demand of the electronic devices makes the necessity to develop new type of devices with small dimensions that need the direction of certain critical parameters, thus solution is good for some problems. The obtaining of silicon nanocristicals devices using the CMOS technology and devices with isolated channel from substrate with Son technology (Silicon on Nothing) suffer from parasitical effects that limit their functioning. Hover the presence of localized defection the interface gate oxide/channel shows the presence of undesirable in their output characteristics. The aim of this thesis was focalized on the study of these defects localized in the interface oxide/Channel using two techniques. This work is composed by two parts: the first part concern the study of the anomalies on the output characteristics by showing the influence of the temperature and the voltage on these anomalies. The second part concerns the characterization of the devices using RTS and low frequency noise technique to show the electrically active defects localized on the interface gate oxide/channel of conduction by extracting the signature of the different defects responsible to the observed noises
Singer, Julien. "Etude des jonctions ultrafines pour les technologies CMOS 45 nm et en deça par simulation atomistique." Lyon, INSA, 2008. http://theses.insa-lyon.fr/publication/2008ISAL0077/these.pdf.
Full textMicroelectronics is nowadays part of our lives, through mobile and multifunctional devices. Due to their mobility, these devices need an embedded, thus limited, energy source. It became necessary to reduce the consumption of the integrated circuits. Junction leakages within the MOSFET transistor, basic component of these circuits, are one of the principle causes of this consumption. Junction leakage in turn depends on the eventual presence of residual extended defects. This work aims to simulate the junction leakage depending on the fabrication process. Atomistic simulation (non lattice kinetic Monte Carlo method) is first used in order to predict the evolution of dopants (diffusion, activation) and of defects (agglomeration, transformation, dissolution) during fabrication steps (ion implantation, thermal annealing). This kind of simulation offers a new way to consider the evolution of defects and impurities during the process. The electrical and energetical characteristics of deep levels, generated by extended defects and responsible for a significative part of the junction leakage, are then studied by deep level transient spectroscopy (DLTS). These characteristics and the dopant profiles are finally used as input in junction current models to simulate ultra shallow junction leakage
Rochette, Florent. "Étude et caractérisation de l'influence des contraintes mécaniques sur les propriétés du transport électronique dans les architectures MOS avancées." Grenoble INPG, 2008. http://www.theses.fr/2008INPG0077.
Full textThe Metal-Oxide-Semiconductor-Field-Effect-Transistors (MOSFET) down-scaling becomes insufficient to satisfy the International Technology Roadmap for Semiconductors (ITRS) performances specifications. A solution consist in improving electronic transport in the MOSFET channel : the use of the silicon piezoresistive effet is an interesting alternative to reach that point. This study presents the state-of-the-art of innovating architectures making it possible to generate strain in the MOSFET channel, after having outlined the problematics that the current microelectronics must face. The strained-Si physics is also expounded. The emphasis is on the mechanical stress effect on carrier mobility which is a fundamental transport parameter in a MOSFET inversion layer. The two-dimensional piezoresistivity is then experimentally studied on various architectures. Electron conductivity mass decreasing under tensile uniaxial stress has been evidenced. After having presented the main electrical characterization techniques making it possible to extract the transport parameters of a MOS transistor, in particular the attractive mobility extraction by magnetoresistance, the physical origin of the mobility gain is extensively analysed on advanced architectures such as strained Silicon Directly On Insulator transistors (sSOI). The electron mobility and the stress-induced gain degradations with the gate length down-scaling are analysed. The mechanisms involved in the mobility limitation in very short channels are identified. Finally performances results of advanced substrate- or process-induced strained nanoscaled MOSFETs are shown in order to illustrate the benefit of strained silicon for the next CMOS generations. The cumulative effet of techniques able to strain the channel are also broached
Maréchal, Aurélien. "Metal-oxide-semiconductor capacitor for diamond transistor : simulation, fabrication and electrical analysis." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT094/document.
Full textOver two decades of technological progresses in growth quality, doping control and device processing have led to the emergence of new potentialities for power electronic applications. As diamond represents the ultimate semiconductor owing to its superior physical properties, efforts have been conducted to develop various electronic devices, such as Schottky diodes, field effect transistors, bipolar transistor, p-i-n junctions...As a prerequisite to the development of new generation diamond power devices, on one side, is the development of simulation tools able to anticipate the device electrical properties as well as its architecture in order to take full advantage of the material physical properties. On the other hand, experimental study of the gate contact, the second building block of the transistor, is fundamental in order to develop high performance devices. In this regard, one can consider several open questions: (i) Are the simulation tools able to take into account the specificities of diamond to model electrical devices? (ii) Is the aluminum oxide suitable to develop a MOSFET gate contact? (iii) If so, is the oxide/diamond interface of good enough quality? (iv) Is the fabrication of a diamond MOSFET a technological issue?This PhD project, attend to answer these questions and pave the way towards the inversion mode MOSFET.Emphasize on the diamond physical properties will help to understand why this material is the ultimate WBG semiconductor. State of the art diamond devices will be presented focusing on field effect transistors. A complementary topic for the development of new generation diamond power device is the anticipation of device electrical properties and architecture through finite element base simulation software. Thus the need for reliable simulation tools will be presented.On one hand, the main models implemented in the simulation tools will be presented and emphasize on the diamond electrical properties will be given. For the simulation of diamond metal-oxide-semiconductor field effect transistor (MOSFET), the study of two building blocks is required: the p-n junction and the gate contact. The later ideal properties will be presented while the former will serve as a basis for the calibration of the physical parameters implemented in the finite element based software. Generation-recombination models influence on the simulated p-n junction electrical properties will be discussed. Finally, the simulation of the electrical properties of a diamond metal-oxide-semiconductor field effect transistor (MOSFET) will be shown.On the other hand, focus will be made on diamond metal-oxide-semiconductor capacitor (MOSCAP) fabrication and electrical characterization. Specifically, the interfacial band configuration of the Al2O3/oxygen-terminated diamond (O-diamond) has been investigated using X-ray photoelectron spectroscopy. The results allowed establishing the band diagram of the Al2O3/O-diamond heterostructure. Then, the electrical properties of the diamond MOSCAP will be shown. Specifically, investigation of the interface states density revealed the pinning of the Fermi level at the interface between the Al2O3 and the O-diamond. Moreover, the leakage currents through the Al2O3 layer will be discussed in terms of temperature dependent trap assisted tunneling of holes from the diamond layer to the top gate contact. Finally, the electrical characterization of the first diamond MOSFET, performed at the National Institute for Advanced Industrial Science and Technology (AIST) in Japan, will be presented. Even if this first attempt was unsuccessful, it is promising for the development of diamond MOSFET since the demonstration of the actual realization of the device is clearly established
Di, Gilio Thierry. "Etude de la fiabilité porteurs chauds et des performances des technologies CMOS 0. 13 µm-2nm." Aix-Marseille 1, 2006. http://theses.univ-amu.fr.lama.univ-amu.fr/2006AIX11024.pdf.
Full textMUSALEM, FRANCOIS-XAVIER. "Modelisation du transport electronique dans les couches d'inversion des transistors mosfet." Paris 11, 1998. http://www.theses.fr/1998PA112054.
Full textGURUMURTHY, ARAVIND. "COMPARISON OF BEHAVIOR OF MOSFET TRANSISTORS DESCRIBED IN HARDWARE DESCRIPTION LANGUAGES." University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1141363591.
Full textRahhal, Lama. "Analyse et modélisation des phénomènes de mismatch des transistors MOSFET avancées." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT061/document.
Full textFor correct operation, certain analog and digital circuits, such as current mirrors or SRAM, require pairs of MOS transistors that are electrically identical. Real devices, however, suffer from random local variations in the electrical parameters, a problem referred to as mismatch. The aim of this thesis is to understand the physical causes of mismatch, to quantify this phenomenon, and to propose solutions that enable to reduce its effects. In this context, four major areas are treated. The first one focuses on the optimization of mismatch measurement methodologies. A new technique for the measurement of Vt and β mismatch and an ID mismatch model are proposed, analyzed and applied to experimental data for 28 nm Bulk and FD SOI technologies. The second area focuses on the characterization of different configurations of MOS transistors in order to propose design architectures that are optimized for certain applications. Specifically, the possibility of replacing LDEMOS with transistors in cascode configuration is analyzed. The third area focuses on the analysis and modeling of mismatch phenomena in advanced Bulk and SOI transistors. Three aspects are analyzed: 1) the impact of the introduction of germanium in P channel of 28nm BULK transistors; 2) the elimination of the metal gate contribution to Vt mismatch by using 20nm Gate-last Bulk technology; 3) a descriptive study of the principal contributions to Vt, β and ID mismatch in 28 and 14 nm FD SOI technologies. The last area treats the mismatch trends with transistor aging. NBTI stress tests were applied to PMOS 28nm FD SOI transistors. Models of the Vt and β mismatch trends as a function of the induced interface traps and fixed charges at the Si/SiO2 interface and in the oxide were developed and discussed
Tuladhar, Looja R. "Resonant power MOSFET drivers for LED lighting /." Connect to resource online, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1264709029.
Full textSingh, Jagar. "Technology, characteristics, and modeling of large-grain polysilicon MOSFET /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202002%20SINGH.
Full textDenais, Mickaël. "Etude des phénomènes de dégradation de type Negative Bias Temperature Instability (NBTI) dans les transistors MOS submicroniques des filières CMOS avancées." Aix-Marseille 1, 2005. http://www.theses.fr/2005AIX11024.
Full textMan, Tsz Yin. "One dimensional quantum mechanical transport in double-gate MOSFET /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202003%20MAN.
Full textBaird, John Malcolm Edward. "A micro processor based A.C. drive with a Mosfet inverter." Thesis, Cape Technikon, 1991. http://hdl.handle.net/20.500.11838/1119.
Full textA detailed study into the development of a three phase motor drive, inverter and microprocessor controller using a scalar control method. No mathematical modelling of the system was done as the drive was built around available technology. The inverter circuit is of a Vo~tage source inverter configuration whicp uses MOSFETs switching at a base frequency of between 1.2 KHz and 2 KHz. Provision has been made for speed control and dynamic braking for special applications, since the drive is not going to be put into a specific application as yet, it was felt that only a basic control should be implemented and space should be left for special requests from prospective customers. The pulses for the inverter are generated from the HEF 4752 I.e. under the control of the micro processor thus giving the processor full control over the inverter and allowing it to change almost any parameter at any time. Although the report might seem to cover a lot of unimportant ground it is imperative that the reader is supplied with the back-ground information in order to understand where A.e. drives failed in the past and where A.e. drives are heading in the future. As well as where this drive seeks to use available technology to the best advantage.
Weckbrodt, Julien. "Pilotage et surveillance de MOSFET SiC : intégration de fonctions intelligentes dans les gate drivers." Thesis, Nantes, 2020. http://www.theses.fr/2020NANT4018.
Full textThe Silicon Carbide (SiC) power transistors are more and more used in electric energy conversion systems. SiC power semiconductors devices such as SiC MOSFET can operate at higher frequency and higher temperature compared to Silicon power MOSFET or IGBT. However, the maturity of the SiC technology is moderate compared to the well-known Silicon-based power semiconductor devices. Recent research works on reliability of SiC power MOSFET identified ageing indicators such as the rise of the gate leakage currents or the on-state resistance. The monitoring of these parameters during normal operation can prevent damages and simplify the maintenance on the energy conversion systems. The gate drivers are required to provide an optimal and safe switching of power semiconductor devices. Nowadays, the gate driver boards include more and more features such as short-circuit detection, soft-shutdown, temperature sensing, on-state voltage monitoring… In this context, embedded measurements circuits are proposed for the online monitoring of ageing parameters. The instrumentation of the gate driver board supposes the integration of communication features to transmit the monitoring data. A specific communication method is proposed to avoid the circulation of additional common mode currents due to high dv/dt. A compact demonstrator was designed and tested on a 1.2kV SiC module
Tsitomeneas, Stephanos. "Conception, étude théorique et réalisation d'un convertisseur intensité-fréquence optoélectronique à amplificateur opérationnel et MOSFETs de puissance." Metz, 1994. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1994/Tsitomeneas.Stefanos.SMZ9462.pdf.
Full textThe present work originates in the experimental and theorical study of the external modulation of a laser beam by electrooptical materials, in the Senarmont arrangement ; the aim is to contribute to the development of the optical telecommunications. A phase modulated laser beam is transported at a certain distance where it is transformed into an amplitude modulation. It is thus necessary to conceive, to realise and to test an electronic device able to detect the transmitted information, but in a form immediately useful in digital systems. The device imagined transforms the amplitude modulation of the light beam into an electronic frequency (Converter of Intensity to Frequency :CIF), with the care not only to avoid any increase of noise but in the contrary to decrease it. By its basic conception, the device is able to be connected directly to a microprocessor, part of a more complex system. Our work presents the association of the photodetection to the optoelectronic integration, accompanied by three realisations; The theoretical principles have been confirmed by the experimental results relative to linearity, dynamical range, noise characteristics and the improvsement of the SNR. The advantage of the PLL type as detector was emphasised. The possible applications of a CIF concern in general systems in which the noise is high in low frequencies, in systems in which the optical signal incident power is very weak, when the interest is focused on the integration of the optical pulses, or finally in the case of the production of active electronic devices
Gurumurthy, Aravind. "Comparison of the behavior of MOSFET transistors described in hardware description languages /." Cincinnati, Ohio : University of Cincinnati, 2006. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1141363591.
Full textRaulet, Claude. "Disjoncteur statique moyenne tension : Mise en série de transistors MOSFET de puissance." Ecully, Ecole centrale de Lyon, 1991. http://www.theses.fr/1991ECDL0045.
Full textBlanc, Caroline. "Elaboration et caractérisation de composants type MOSFET en 4H-SiC orienté (11-20)." Montpellier 2, 2005. http://www.theses.fr/2005MON20220.
Full textBlampain, Eloi. "Analyse et étude de transistors nLDDMOSFETs de technologie 1. 2 micromètres, et des effets induits par irradiations." Metz, 1997. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1997/Blampain.Eloi.SMZ9707.pdf.
Full textThe reduction of electronics devices dimensions, produces a strong modification of their electrical characteristics and a high sensitivity to external agressions. In this work we present a study of lightly doped drain (LDD) nLDDMOSFET's of matra-mhs 1. 2 um technology. This work contains two major parts : *the first part concerns an experimental study, based on conduction parameter evolution, and on the modification of the transistor body-drain junction parameters. A complementary study of MOS capacitors has been carried out in order to determine more technological parameters. A coherent characterization method of MOS transistor and their elements has been expanded. Properties degradation of body-drain junction in submicronic range have been analysed and related to dimensions reduction. * The second part presents a two-dimensional simulation of these divices, using two level simulation : a simulation with the 2D simulator ATHENA which provides a two-dimensional simulation of semiconductors processing. This simulation step requires a good choice of process parameters (ion implantation dose, energy, annealing condition. . . ) A two-dimensional electrical behavior simulation with the simulator S PISCES 2B, based on the choice of physical models taken into account for these devices. Finally, this work presents a coherent characterization method of dimensions reductions effects and of electrical behavior degradation of these devices after radiation exposure. It gives a simulation methodology which made it possible to show the role of the double channel implantation (B and As) for the threshold voltage adjustement and substrate thichness influence. This work shows that the ionizing radiation and displacement damage can be characterized by the body-drain junction study. Gate bias and ionizing radiation have the same effects on conduction processes in this junction
Vincent, Benjamin. "Procédés de réalisation de matériaux "germanium sur isolant" par technique de condensation du germanium." Grenoble INPG, 2008. http://www.theses.fr/2008INPG0079.
Full textElaboration of SGOI (Silicon Germanium On Insulator) - GeOI (Ge On Insulator) substrates is detailed in this thesis report, by an innovative process called the Germanium condensation technique. A first identification of the SGOI layers characteristics, which elaboration by the Ge condensation technique is adapted for is proposed: the process is particul, efficient to obtain 10-20nm mid Ge enriched (25-75%) SGOI layers whereas it presents different issues for elaboration ultrathin «10nm) and high Ge enriched (>75%) ones. An entire procedure is proposed for elaboration of 50nm G wafers with subsequent device integrations and characterizations. A 100% enhancement for hole mobility within pMOSFETs elaborated on such layers compared to SOI devices has been demonstrated. Due to the lack of performances concerning GeOI nMOSFETs, elaboration of hybrid SOI-GeOI substrates by local Ge condensation techniques is finally proposed
Yin, Chunshan. "Source/drain and gate design of advanced MOSFET devices /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202005%20YIN.
Full textBordelon, John H. "A large-signal model for the RF power MOSFET." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/15048.
Full textPrivat, Aymeric. "Stress électrique post irradiation des transistors MOS de puissance pour les systèmes embarqués spatiaux." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20130.
Full textAt present, space actors are highly concerned with heavy ion-induced power MOSFETs hard failures and in particular by oxide rupture after heavy ion irradiations. In order to guarantee the reliability of space systems, contractors have to follow qualification procedures. The US military standard for heavy ion testing, MIL-STD-750E method 1080, recommends performing a post irradiation test (Post Gate Stress Test PGST) in order to reveal latent defects sites that might have been created during irradiation. Unfortunately, this type of test can only be considered as a pass or fail test. With a too much restrictive approach, rare are the devices to be qualified. Even if the US test method is accurate on most of the points, the main issue is related to the Post-irradiation Gate Stress. What is lacking is that this part of the US Test Standard has neither been dedicated to real space missions nor adapted to space environment. The PGST has even no physical basis justifying performing it for space applications. Working from fundamental to applicative, we aim at drawing test standards dedicated to the engineer in charge of space applications. The qualification of power MOSFETs for space applications is one of the major challenges for European space actors. The goal of this thesis is first to focus on latent defects formation criteria and then, to show under which conditions the post irradiation gate stress test might be relevant or not
Yen, Chi-min 1949. "Two-dimensional simulation of power MOSFET near breakdown." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276695.
Full textKong, Frederick. "Silicon-on-sapphire MOSFET parameter extraction by small-signal measurement /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17051.pdf.
Full textHiblot, Gaspard. "Modélisation compacte de transistors MOSFETs à canal III-V et films minces pour applications CMOS avancées." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT066.
Full textIII-V MOSFETs are considered as a potential candidate for next generation CMOS logic applications thanks to their remarkable transport properties.On the other hand, they suffer from several physical drawbacks (such as tunneling currents or low density-of-states) and technological difficulties (in particular interface traps), which may deteriorate their performance.In this thesis, a physical compact model of the III-V MOSFET is established. It includes a description of short-channel effects, inversion charge (also considering bandstructure effects in thin channels), transport characteristics, tunneling currents, and external components such as access resistances and fringe capacitances. Using this model, the performance of III-V MOSFETs is benchmarked against Si, and a possible roadmap including these devices is presented. It has been found that the III-V channels may feature a significant performance advantage over Si, provided that the interface traps issue be solved. In that case, they may be introduced at the "7nm" node. The critical trap density, above which the performance of III-V MOSFETs degrades below Si, depends on the architecture considered. Finally, the very thin channels required to achieve a good performance with III-V materials may raise variability issues that could reverberate negatively at the circuit design level
Ankarcrona, Johan. "High Frequency Analysis of Silicon RF MOS Transistors." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Universitetsbiblioteket [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5909.
Full textLinewih, Handoko, and h. linewih@griffith edu au. "Design and Application of SiC Power MOSFET." Griffith University. School of Microelectronic Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030506.013152.
Full textLinewih, Handoko. "Design and Application of SiC Power MOSFET." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/367638.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Microelectronic Engineering
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Jeon, Yongjoo. "High-k gate dielectric for 100 nm MOSFET application /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004296.
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