Electronic Devices and Semiconductor Manufacturing Commons^™

Reducing The Production Cost Of Semiconductor Chips Using (Parallel And Concurrent) Testing And Real-Time Monitoring, Qutaiba Khasawneh

Electrical Engineering Theses and Dissertations

Consumer electronics changed the semiconductor industry by developing many new challenges for consumer products. One of the main challenges in the consumer product is that it propelled the volume of production to massive production, e.g. hundreds of millions of cell phones are produced yearly. Combined with the overproduction of consumer products, price pressure is another challenge for consumer products. Many of the new techniques used in the design and fabrication enabled the integration of more devices in the same chips. This reduced the cost of the chips, lowered the power consumption, increased the circuit operation speed, enabled more reliable implementation, …

Design And Optimization Of A High Power Density Silicon Carbide Traction Inverter, Tyler Adamson

Graduate Theses and Dissertations

This project was initiated with the goal of demonstrating a 3-phase silicon carbide based 150-kW 25 kW/L DC-AC power conversion unit capable of operation with coolant temperatures up to 90°C. The project goals were met and exceeded by first analyzing the established inverter topologies to find which one would yield the highest power density while still meeting electrical performance needs in the 150-kW range. Following topology selection, the smallest silicon carbide power module that met the electrical requirements of the system was found through experimental testing and simulation. After a power module selection was finalized, a DC link capacitor bank …

Development Of A Comsol Microdialysis Model, Towards Creation Of Microdialysis On A Chip With Improved Geometries And Recovery, Patrick Pysz

Graduate Theses and Dissertations

Microdialysis (µD) sampling is a diffusion-limited sampling method that has been widely used in different biomedical fields for greater than 35 years. Device calibration for in vivo studies is difficult for current non-steady state analytes of interest correlated with both inflammatory response and microbial signaling molecules (QS); which exist in low ng/mL to pg/mL with molecular weights over a wide range of 170 Da to 70 kDa. The primary performance metric, relative recovery (RR), relating the collected sample to the extracellular space concentration varies from 10% to 60% per analyte even under controlled bench-top conditions. Innovations in microdialysis device design …

Interfacial Contact With Noble Metal - Noble Metal And Noble Metal - 2d Semiconductor Nanostructures Enhance Optical Activity, Ricardo Raphael Lopez Romo

Graduate Theses and Dissertations

Noble metal nanoparticles and two-dimensional (2D) transition metal dichalcogenide (TMD) crystals offer unique optical and electronic properties that include strong exciton binding, spin-orbital coupling, and localized surface plasmon resonance. Controlling these properties at high spatiotemporal resolution can support emerging optoelectronic coupling and enhanced optical features. Excitation dynamics of these optical properties on physicochemically bonded mono- and few-layer TMD crystals with metal nanocrystals and two overlapping spherical metal nanocrystals were examined by concurrently (i) DDA simulations and (ii) far-field optical transmission UV-vis spectroscopic measurements. Initially, a novel and scalable method to unsettle van der Waals bonds in bulk TMDs to prepare …

High Frequency Ltcc Based Planar Transformer, Adithya Venkatanarayanan

Graduate Theses and Dissertations

As we move towards high power and higher frequency related technology, conventional wire-wound magnetics have their own limitations which has led path to the development of planar based magnetic materials. Nowadays more planar magnetic technology has been employed because it is easier to fabricate them. The planar magnetic is a transformer or an inductor that replaces the wire-wound transformer or inductors which generally uses copper wires. One of the main reasons why we move to planar magnetic technology is its operation at higher frequency which provides higher power density. This study explains in detail about the design and fabrication of …

Optical Angular Scatterometry: In-Line Approach For Roll-2-Roll And Nano-Imprint Fabrication Systems, Juan Jose Faria-Briceno

Electrical and Computer Engineering ETDs

As critical dimensions continue to shrink and structures become more complex, metrology processes are challenging to implement during in-line nanomanufacturing. Non-destructive, non-contact, and high-speed conditions are required to achieve proper metrology processes during in-line manufacturing. Optical scatterometry is a nanoscale metrology tool widely used in integrated circuit manufacturing for characterization and quality control. However, most applications of optical scatterometry operate off-line. A high-speed, in-line, non-contact, non-destructive scatterometry angular system has been demonstrated in this work to scan pattern surfaces during real-time nano-fabrication.

Our system has demonstrated scanning capabilities using flat, 1D and 2D complex structures. The flat surface samples consist …

Integrated Chirped-Grating Spectrometer-On-A-Chip, Shima Nezhadbadeh

Optical Science and Engineering ETDs

In this dissertation we demonstrate a new structure based on waveguide coupling atop a silicon wafer using a chirped grating to provide the dispersion that leads to a high-resolution, compact, fully integrable and CMOS-compatible spectrometer. Light is both analyzed and detected in a single, completely monolithic component which enables realizing a high-resolution portable spectrometer with an extremely compact footprint. The structure is comprised of a SiO₂/Si₃N₄/SiO₂ waveguide on top of a silicon wafer. Grating regions are fabricated on the top cladding of the waveguide. The input light is incident on a chirped grating …

Diseño E Implementación De Un Sistema Automático De Fertiirrigación Para Un Cultivo De Gulupa, Lisbey Catherine Gómez Puentes, Sebastian Ilich Jimenez Vivas

Ingeniería en Automatización

En Colombia la producción frutícola se ha tecnificado notablemente en los últimos años debido a la creciente demanda nacional e internacional de frutas tropicales; la gulupa fue la segunda fruta exótica con más exportación en el año 2017 (La vanguardia, 2018). Actualmente en el municipio de La Belleza Santander los sistemas de riego y fertilización para el cultivo de gulupa son trabajos manuales, ocasionando anormalidades en los frutos ya que por este motivo el fruto puede quedar rugoso, con pulpa seca, insípida y poco aromática; además, se puede presentar desorden fisiológico en la planta (crecimiento y vigor). Al ser este …

Desarrollo De Un Juguete Educativo Armable, Que Permita El Aprendizaje Correcto Del Cepillado Dental, Jhon Alejandro Celis Méndez, Luis Arturo Penagos Gómez

Ingeniería en Automatización

El presente documento se constituye como la memoria técnica y a su vez la guía para el entendimiento del prototipo denominado por los autores como “ODONTODRILO”, el cual surge a partir del proyecto titulado “Desarrollo de un juguete educativo armable, que permita el aprendizaje correcto del cepillado dental”. En este sentido, se tiene que el proyecto consistió en diseñar, fabricar e implementar un juguete educativo armable, que permita el aprendizaje correcto del cepillado dental en niños de temprana edad. A partir de la necesidad citada, se definió un marco metodológico que consiste en tres etapas, la primera de ellas se …

Design And Analysis Of Modular Axial Flux Switched Reluctance Motor, Rochak Shiwakoti

University of New Orleans Theses and Dissertations

This thesis presents a new modular structure of the axial flux Switched Reluctance Motor (SRM). The design consists of four stator disks with each adjacent disk rotated 30 degrees apart and four rotor disks connected to a common shaft. The proposed design aims to reduce the unwanted radial force, mitigate the torque ripple, and improve the efficiency. The modular structure distributes the radial force and torque strokes along the axial length of the motor, potentially damping the torque pulsation. In addition, the modular structure would deliver the rating power at a lower current level, reducing the overall ohmic loss. Moreover, …

Smart Charging Of Future Electric Vehicles Using Roadway Infrastructure, Sara Ahmed, Ethan Ahn, Mahmoud Reda Taha, Samer Dessouky, Moneeb Genedy, Daniel Fernandez, Ann Sebestian, Patience Raby

Data

Corresponding data set for Tran-SET Project No. 18ITSTSA03. Abstract of the final report is stated below for reference:

"Inspired by the fact that there is an immense amount of renewable energy sources available on the roadways such as mechanical pressure and frictional heat, this study presented the development and implementation of an innovative charging technique for future electric vehicles (EVs) by fully utilizing the existing roadways and the state-of-the-art nanotechnology and power electronics. The project introduced a novel wireless charging system, SIC (Smart Illuminative Charging), that uses LEDs powered by piezoelectric nanomaterials as the energy transmitter source and thin film …

Smart Charging Of Future Electric Vehicles Using Roadway Infrastructure, Sara Ahmed, Ethan Ahn, Mahmoud Reda Taha, Samer Dessouky, Moneeb Genedy, Daniel Fernandez, Ann Sebestian, Patience Raby

Publications

Inspired by the fact that there is an immense amount of renewable energy sources available on the roadways such as mechanical pressure and frictional heat, this study presented the development and implementation of an innovative charging technique for future electric vehicles (EVs) by fully utilizing the existing roadways and the state-of-the-art nanotechnology and power electronics. The project introduced a novel wireless charging system, SIC (Smart Illuminative Charging), that uses LEDs powered by piezoelectric nanomaterials as the energy transmitter source and thin film solar panels placed at the bottom of the EVs as the receiver, which is then poised to deliver …

Switching Trajectory Control For High Voltage Silicon Carbide Power Devices With Novel Active Gate Drivers, Shuang Zhao

Graduate Theses and Dissertations

The penetration of silicon carbide (SiC) semiconductor devices is increasing in the power industry due to their lower parasitics, higher blocking voltage, and higher thermal conductivity over their silicon (Si) counterparts. Applications of high voltage SiC power devices, generally 10 kV or higher, can significantly reduce the amount of the cascaded levels of converters in the distributed system, simplify the system by reducing the number of the semiconductor devices, and increase the system reliability.

However, the gate drivers for high voltage SiC devices are not available on the market. Also, the characteristics of the third generation 10 kV SiC MOSFETs …

Residential Electricity Management And Protection System, Ejimonu Kosisochukwu Gabriel

Journal of International Technology and Information Management

The Residential Electricity Monitoring System is an electricity meter connected to the Internet to provide real time data on the power system in your home. The REMS is designed to replace the distribution board allowing it to conduct a series of tests on the quality of the electricity supply to your home/facility and, within your home detect basic wiring faults and allow owners and service providers to identify potential problems with the electrical systems.

The electrical monitoring system finally puts proper electrical control into the hands of the home owner by providing him with the ability to control power distribution …

Five-Level Flying Capacitor Converter Used As A Static Compensator For Current Unbalances In Three-Phase Distribution Systems, Rafael Franceschi

Graduate Theses and Dissertations

This thesis presents and evaluates a solution for unbalanced current loading in three-phase distribution systems. The proposed solution uses the flying capacitor multilevel converter as its main topology for an application known as Unbalanced Current Static Compensator. The fundamental theory, controller design and prototype construction will be presented along with the experimental results. The Unbalanced Current Static Compensator main objective is the balancing of the up-stream currents from the installation point to eliminate the negative- and zero-sequence currents originated by unbalanced single-phase loads.

Three separate single-phase flying capacitor converters are controlled independently using a d-q rotating reference frame algorithm to …

Pixelated Gasb Membranes For Photovoltaics: Fabrication And Structure-Property Relationships, Vijay Saradhi Mangu

Electrical and Computer Engineering ETDs

In this thesis, I present a reliable and efficient approach to heterogeneous integration of single-crystalline GaSb semiconductors with highly mismatched materials. The mismatch may refer to the crystalline structure and the thermal expansion coefficient of single-crystalline GaSb and the other materials of interest. The strategy of hetero-integration relies on epitaxial lift-off. This approach prevents the formation of extended structural defects that are detrimental to the performance of optoelectronic devices and preserves GaSb growth substrates for potential reuse.

Within my research work, I have overcome some outstanding challenges of epitaxial lift-off of GaSb, and I have demonstrated the operation of single-crystalline …

Energy Transformation And Conservation Investigation, Mike Jackson, Holly Haney

High School Lesson Plans

Students will use a thermoelectric generator module to analyze the relationship between thermal and electrical energies. Using data collection sensors and analysis software, students will investigate the relationship between the temperature gradient across a thermoelectric generator module and the resulting electrical potential. Students will then use their data and analysis to solve problems relating to waste thermal energy in electrical systems and communicate their work to their peers and teacher.

Structural Health Monitoring Of Composite Parts: A Review, Jacob Pessin

Honors Theses

Structural health monitoring has the potential to allow composite structures to be more reliable and safer, then by using more traditional damage assessment techniques. Structural health monitoring (SHM) utilizes individual sensor units that are placed throughout the load bearing sections of a structure and gather data that is used for stress analysis and damage detection. Statistical time based algorithms are used to analyze collected data and determine both damage size and probable location from within the structure. While traditional calculations and life span analysis can be done for structures made of isotropic materials such as steel or other metals, composites …

Radiation And Convective Losses In The Heat Sink Channel Of Photovoltaic-Thermal System, Oskar F. Tukhfatullin, Ramizulla A. Muminov

Euroasian Journal of Semiconductors Science and Engineering

. The processes of heat transfer in the channel of a liquid photovoltaic/thermal system of a flat construction without forced circulation are considered. A method of calculating the heat transfer coefficients by radiation and convection, the Nusselt and Reynolds numbers for a given photovoltaic/thermal system was proposed. It was determined that the processes of convective heat transfer in a flat photovoltaic/thermal system installed in the territory of the Republic of Uzbekistan at an optimum angle of inclination equal to the geographical latitude of the place of operation should be considered as for parallel plates located at tilt angle not more …

, Abatbay K. Uteniyazov, Kanatbay A. Ismailov, Fatima T. Srajatdinova

Euroasian Journal of Semiconductors Science and Engineering

The results of studies of the direct branch of the current – voltage characteristic of the Al-Al2O3-p-CdTe-Mo structure with base thicknesses d ~ 8÷10 μm are presented. It was shown that, along with point defects and impurities, complex complexes participate in the recombination processes in the base of the structure under study. It was established that at low current densities in point of recombination processes point defects take part, and at high current densities, when the recombination rate reaches full saturation of U≈NR/τi, the recombination processes in the samples under study are determined by complex complexes within which the electrons …

Serial And Shuntable Resistance Of Cigs Solar Photo-Electric Module In The Conditions Of Real Solar Lighting At Various Temperatures, Rustam R. Kobulov, Nuriddin A. Matchanov, Omonboy K. Ataboev, Farrukh A. Akbarov

Euroasian Journal of Semiconductors Science and Engineering

The current-voltage characteristics of the solar photovoltaic module, based on a thin-film polycrystalline semiconductor binary compound Cu(In, Ga)Se2, under real solar illumination (Prad=780 ± 30 W/m2), in the temperature range of 25 °C-50 °C, have been studied and the values of serial and shunt resistance are determined. It has been established that with increasing temperature, the magnitudes of the series and shunting resistance of the solar photovoltaic module decrease, which is most likely due to the modulation of the resistance of the n-CdS buffer front layer.

Optical Power Meter For Diagnostics Of Fiber-Optic Communication Lines And Digital Multimeter, Feruza A. Giyasova, B. Sh. Yuldashev, Ruslan G. Zakirov, Gulkhayo T. Murodillaeva

Euroasian Journal of Semiconductors Science and Engineering

A multifunctional optical power attenuation meter in fiber optic cables for widespread use is proposed in this article. The main feature of the proposed meter is the ability to perform of diagnostics of mechanical damage of fiber-optic communication lines and determine the attenuation degree of a signal in the fiber-optic path in the spectral ranges of 1270-1340 nm and 1520-1580 nm, as well as the measurement of voltage, current and resistance in electrical circuits. The possibility of using the meter for diagnostics of onboard fiber-optic communication lines is justified.

Study Of The Morphological And Electrical Properties Of Films Of Solid Solution Znxsn1-Хse Obtained By The Method Of Cmbd, Kudrat M. Kuchkarov, Takhir M. Razykov, Bobur A. Ergashev, Rukhiddin T. Yuldoshov

Euroasian Journal of Semiconductors Science and Engineering

The ZnXSn1-XSe solid solution films were fabricated by the chemical molecular beam deposition (CMBD) method. The sources used were ZnSe and SnSe compounds of stoichiometric composition at the substrate temperature of 5600С. The morphological and electrophysical properties of the ZnXSn1-XSe solid solution films are investigated. Scanning electron microscope images showed that the grain sizes of the films are 8÷20 microns. The structural parameters of the obtained films are given. The electrical conductivity of the films was 15 ÷ 1 • 10-6 (Ohm·cm) -1 depending on the composition of the solid solution.

The Principles Of Increasing The Sensitivity Of Transistor Structures To External Influences, Davron R. Djuraev, Abdulaziz V. Karimov, Dilbara M. Yodgorova, Akmal A. Turaev

Euroasian Journal of Semiconductors Science and Engineering

This article discusses a multifunctional sensor based on a field-effect transistor with a p-n-junction. The sensor allows to register temperature, light intensity, pressure with high level of sensitivity. At the same time, ensuring the sensitivity of the structure to external influences is practically solved due to constructive changes. Due to constructive solutions, the proposed sensor based on a field-effect transistor greatly exceeds the similar diode structures in sensitivity.

Influence Of Heat Treatment On The Behaviorof Deep Levels In Silicon Doped By Tungsten, Shokhrukh Kh. Daliev, Abdugofur T. Mamadalimov, Sayfullo S. Nasriddinov, Anifa D. Paluanova

Euroasian Journal of Semiconductors Science and Engineering

By means of Deep Level Transient Spectroscopy the kinetics of the annealing of the levels of tungsten in silicon during heat treatment in the temperature range 150÷4000С was studied. It was found a non-monotonic change in the concentration of deep levels Ec-0.30 eV and Ec-0.39 eV under isothermal annealing: the concentrations of both levels at short times increase, then the concentration level of Ec-0.30 eV sharply decreases, and the reduction of the concentration of deep level Ec-0.39 eV is much slower.

Infrared Spectroscopy Of Silicon Doped By Stannum And Manganese, Sharifa B. Utamuradova, Ravshanbek M. Ergashev, Khusniddin J. Matchanov

Euroasian Journal of Semiconductors Science and Engineering

The processes of defect formation in silicon doped by tin and manganese and their interaction with uncontrolled impurities were studied by infrared spectroscopy.It was found that the presence of impurities of transition and isovalent elements leads to a technological decrease in the concentration of process impurities – oxygen and carbon. It was found that the introduction of manganese in Si leads to a strong decrease in the concentration of interstitial optically active oxygen Noopt: in rapidly cooled samples Si there is a decrease of Noopt by 50% compared to the original Si.

The Photoluminescence Spectra Of Powders Of Zinc Oxide With Laser Excitation, Ilyos A. Rakhmatullaev, Vladimir S. Gorelik, Abdulla K. Kurbonov

Euroasian Journal of Semiconductors Science and Engineering

The original sensitive method of research of the nanopowders based on use of laser excitation and a multichannel spectrometer is offered. The developed method can be used for the analysis of quality of a wide class of the powders on the basis of laser spectroscopy of secondary radiation.

Laser Testing Of Silicon Wafers, Zakirjan T. Azamatov, Ilya A. Kulagin, Kakhkhor P. Abdurakhmanov, Nigora A. N.A. Akbarova

Euroasian Journal of Semiconductors Science and Engineering

The possibility of detection of defects in silicon wafers by Fourier analysis of digital images obtained by laser introscopy is shown.

Features The Generalities Of I-V Curve Formation In Mosfet With A Common Drain, Khayrulla K. Aripov, Akhmed M. Abdullayev, Shunkurjon T. Toshmatov

Euroasian Journal of Semiconductors Science and Engineering

The results of theoretical and experimental studies of the generalities of current-voltage characteristics curve formation of metal-oxide-semiconductor transistors of the common drain are presented. The principal difference between input and output characteristics of the common drain from the analogical characteristics in the common source is shown. The source-gate and source characteristics of a metal-oxide-semiconductor transistor in the common drain are given. Combined families of source-gate and source characteristics of a metal-oxide-semiconductor transistor in the common source and drain are obtained.

Organic Photodiodes On The Basis Of Cottonfiber/Polymer Composite, Jonibek J. Hamdamov, Anvar S. Zakirov, Abdugafur T. Mamadalimov

Euroasian Journal of Semiconductors Science and Engineering

In this paper, we report a study on the optical and the electrical properties of pure cotton fibers (CF) from chemically surface- and morphology-modified samples coated with poly [2-methoxy-5-(2-ethylhexyloxy)- 1,4-phenylenevinylene] (MEH-PPV) polymer by using a dip-coating method. The efficiency of white light luminescence of cotton fibers coated with meh- MEH-PPV polymer increased and became much more intense in comparison with the luminescence of uncoated fibers and blue, green and red stripes were observed in the luminescence structure. The сurrent-voltage characteristic of sandwich-type devices consisting of successive layers of ITO (Indium doped tin oxide coated glass)-PEDOT-PSS (Poly (3,4-ethylenedioxythiophene)-Poly(styrenesulfonate)-CF/MEH-PPV-Ag showed that up …