Development and Applications of a New Deep Level Transient Spectroscopy Method and New Averaging Techniques

Abstract

This manuscript has been reproduced frorn the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be frorn any type of computer printer.The quality of this reproduction i s dependent upon the quality of the copy submitted. Broken or indistinct ptint, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized wpwght material had to be removed, a note will indicate the deletion.Oversize materials (e-g., maps, drawings, charts) are reproduced by sedioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this w p y for an additional charge. Contact UMI directly to order. The author has granted a nonexclusive licence allowing the National Library of Canada to reproduce, loîn, distribute or sell copies of this thesis in microform, paper or electronic formats.The author retains ownership of the copyright in this thesis. Neither the thesis nor substantial extracts fiom it may be printed or othenirise reproduced without the author's permission.L'auteur a accordé une licence non exclusive permettant à la Bibliothéque nationale du Canada de reproduire, prêter, distribuer ou vendre des copies de cette thèse sous la forme de microfiche!film, de reproduction sur papier ou sur format électronique.L'auteur conserve la propriété du droit d'auteur qui protège cette thèse. Ni fa thèse ni des extraits substantiels de celle-ci ne doivent être imprimés ou autrement reproduits sans son autorisation, AbstractIn this thesis, we report new advancements in the field of Deep Level Transient Spectroscopy (DLTS) which is a powerfûl method for investigation of elecûically active point defects in semiconductors. We demonstrate these advancements by building a stateof-the-art DLTS system and perfonning extensive measurements on several types of fieldeffec t transis tors (FETs) .We iltroduce a new approach to digital signal processing in DLTS systems. The problems of signal recovery from noise and efficient data storage are addressed separately from the transient signal analysis. We combine two complementary digital averaging techniques which substantially improve the DLTS digital signal processing. Compared to other digital D U S systems, the new averaging techniques offer an improved time resolution at the beginning of the transient, improved signal-to-noise ratio, and more efficient data stor...

Nanobonding: A key technology for emerging applications in health and environmental sciences

“…As shown, the biosensing system includes control, signal conditioning and signal processing electronics [54][55][56][57] to improve the quality of sensed signal. It also includes a lowpower, low-cost silicon-based wireless transceiver [58][59][60][61][62] to send information from the sensing environment (e.g., a rural area) to an urban center where appropriate actions can be taken if pathogens are present in the water sample.…”

“…74,75) We have also developed data and signal processing electronics. [54][55][56][57] These individual components or systems, together with others being developed (such as lasers, and antennas), in diverse technologies (silicon, GaAs, InP, glass or polymer, etc.) must be integrated and bonded to create compact, high-performance bioimaging systems.…”