Index Catalog // ScholarsArchive@OSU

Variable-width pulse generation using avalanche transistors

Creator:: Magnuson, Waldo George
Abstract:: The extremely fast ionization process in semiconductors offers a means of generating pulses that have sub -nanosecond rise times and high peak powers. There are several important applications of these pulses which require the duration of the generated pulse to be variable. This thesis investigates three methods of producing variable...
Resource Type:: Masters Thesis

Vacuum deposition of silicon monoxide for capacitors

Creator:: Lo, Joseph Ping Kwan
Abstract:: The experimental procedure for evaporating silicon monoxide together with the methods for measuring the film thickness have been investigated. The effects of various process parameters on the rate of deposition, such as source temperature and source-substrate distance, have been studied. The uniformity of silicon monoxide films deposited by this particular...
Resource Type:: Masters Thesis

Transmitter power requirements of optical and radio communication systems

Creator:: Cordy, Clifford B., Jr.
Abstract:: The recent development of the laser has made possible communications with a beam of coherent light. Since coherent light offers great advantages over radio in the areas of beam directivity and information capacity, optical communication systems have been proposed for many uses. The first section of this thesis gives a...
Resource Type:: Masters Thesis

Thermal growth and chemical etching of silicon dioxide film

Creator:: Mai, Chao Chen
Abstract:: Some important factors that affect the dimensional control of oxide films on silicon were studied. Both N- and P-type silicon with resistivities in the range of 0.014 to 200 ohm-cm and a (111) surface orientation were employed in this experiment. The etching rates of silicon dioxide in hydrofluoric acid (111)...
Resource Type:: Masters Thesis

The effect of etches on surface recombination in silicon

Creator:: Cheng, Dan Sang
Abstract:: This thesis presents a limited investigation of the effects of various etches on the surface properties of silicon. Surface recombination velocities of silicon under different etching treatments are compared by using the photoelectromagnetic effect. A measure of the minority carriers lifetime by the photoconductive decay method provides another means of...
Resource Type:: Masters Thesis

The concentration profile of diffused radio-active antimony in a silicon-dioxide layer

Creator:: Khanna, Satya Pal
Abstract:: The selective masking effect of a thermally grown layer of silicon dioxide has been widely utilized as a technique for controlling the geometry and impurity concentration in semi-conductor device technology. It is also recognized that the passivation of the silicon surface by the vitreous silicon dioxide envelope protects the underlying...
Resource Type:: Masters Thesis

Schottky emission through thin aluminum-oxide films

Creator:: Chambers, Donald Ray
Resource Type:: Masters Thesis

Reactively sputtered films of silicon nitride for diffusion masking

Creator:: Delzer, Dennis Richard
Abstract:: The experimental procedure for reactively sputtering films of silicon nitride together with the methods for measuring the film thickness have been investigated. Some of the properties of these nitride films were studied. These properties included: infrared spectrum, etching properties, and index of refraction. The adherence of the films was also...
Resource Type:: Masters Thesis

Percussive-welded p-n junctions in silicon

Creator:: Tao, David Ming-Shih
Abstract:: This thesis investigates a way to fabricate P-N junctions by percussive welding. The theoretical basis of percussive welding, design considerations of the apparatus used, and the electrical characteristics of the junctions were the main objectives of this investigation. P-type silicon wafers and gold wire doped with arsenic as a N-type...
Resource Type:: Masters Thesis

Percussive welding of metal-semiconductor contacts

Creator:: Heck, Lyle Daniel
Abstract:: Application of automatic production techniques to the fabrication of semiconductor devices has been somewhat limited by the requirements of conventional alloying techniques. These alloying techniques require an excessive amount of individual handling. This thesis investigates the feasibility of applying percussive welding to the fabrication of metal-semiconductor contacts, as a solution...
Resource Type:: Masters Thesis

Percussion welding force, temperature and time relationships for welding 6061-T6 aluminum

Creator:: Eggers, Johannes Lyle
Abstract:: The force, temperature, and time relationships were investigated by using oscilloscope measurement techniques. Force was measured using a strain gage and the dynamic response recorded with a polaroid oscilloscope camera. Temperature was measured with a tungsten-rhenium thermocouple and recorded in the same manner. Residual stress measurements were made to determine...
Resource Type:: Masters Thesis

Oscilloscope sampling converter for observing nanosecond waveforms

Creator:: Leabo, Dell Patrick
Resource Type:: Masters Thesis

Microwave methods of measuring resistivity of gallium arsenide

Creator:: Quinn, Alexander C.
Abstract:: This paper is concerned with the determination of gallium arsenide resistivity by measurement of attenuation of microwave energy at 7500 megacycles transmitted through a slice. The first section of this paper describes gallium arsenide properties as compared to silicon, germanium, silicon carbide, and diamond. A description is then given of...
Resource Type:: Masters Thesis

Metal-to-gallium arsenide contact evaluation using a VHF bridge technique

Creator:: Armantrout, G. A.
Abstract:: In this paper, the theory of metal-semiconductor contacts was applied to metal contacts on gallium arsenide. A model was discussed which proposed that the contact resistance was due to a highly resistive region between the metal and the semiconductor. In order to evaluate this resistance, a technique using a VHF...
Resource Type:: Masters Thesis

Lumped model transistor noise analysis

Creator:: Akkaya, Dogan Ibrahim
Resource Type:: Masters Thesis

Low level D-C detection using a photoconductive modulator

Creator:: Teien, Aage
Resource Type:: Masters Thesis

Linear metal-oxide-semiconductor integrated circuits

Creator:: Chalfan, John Lawrence
Abstract:: This paper is a study of various linear Metal-Oxide- Semiconductor integrated circuit configurations with the goal of improving their operation. The operation of MOS devices is covered including their use as load devices to replace diffused resistors. The advantages and disadvantages of the resulting circuits as well as possible physical...
Resource Type:: Masters Thesis

Impedance bridge balancing using perturbation theory

Creator:: Sternes, Kenneth James
Abstract:: This paper describes a technique for separating the two signal voltages which are necessary for balancing an ac impedance bridge from its detector output voltage. The technique is unique in that the necessary information is derived from modulations on the generator voltage. These modulations are formed by perturbing the variable...
Resource Type:: Masters Thesis

Impact ionization in gold-doped silicon

Creator:: Frescura, Bert Louis
Resource Type:: Masters Thesis

Field-effect transistor noise at low temperatures

Creator:: Spaulding, Richard Alan
Abstract:: Low temperature noise measurements on junction field-effect transistors tend to substantiate a theory of low frequency field-effect transistor noise based on the presence of generation centers in the gate-channel depletion region. Measurements of device noise voltage versus temperature reveal pronounced maxima and minima over the temperature range of 300° K...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Variable-width pulse generation using avalanche transistors

Vacuum deposition of silicon monoxide for capacitors

Transmitter power requirements of optical and radio communication systems

Thermal growth and chemical etching of silicon dioxide film

The effect of etches on surface recombination in silicon

The concentration profile of diffused radio-active antimony in a silicon-dioxide layer

Schottky emission through thin aluminum-oxide films

Reactively sputtered films of silicon nitride for diffusion masking

Percussive-welded p-n junctions in silicon

Percussive welding of metal-semiconductor contacts

Percussion welding force, temperature and time relationships for welding 6061-T6 aluminum

Oscilloscope sampling converter for observing nanosecond waveforms

Microwave methods of measuring resistivity of gallium arsenide

Metal-to-gallium arsenide contact evaluation using a VHF bridge technique

Lumped model transistor noise analysis

Low level D-C detection using a photoconductive modulator

Linear metal-oxide-semiconductor integrated circuits

Impedance bridge balancing using perturbation theory

Impact ionization in gold-doped silicon

Field-effect transistor noise at low temperatures

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