Function Implementation in a Multi-Gate Junctionless FET Structure

Title from PDF of title page, viewed September 18, 2023Dissertation advisor: Mostafizur RahmanVitaIncludes bibliographical references (pages 95-117)Dissertation (Ph.D.)--Department of Computer Science and Electrical Engineering, Department of Physics and Astronomy. University of Missouri--Kansas City, 2023This dissertation explores designing and implementing a multi-gate junctionless field-effect transistor (JLFET) structure and its potential applications beyond conventional devices. The JLFET is a promising alternative to conventional transistors due to its simplified fabrication process and improved electrical characteristics. However, previous research has focused primarily on the device's performance at the individual transistor level, neglecting its potential for implementing complex functions. This dissertation fills this research gap by investigating the function implementation capabilities of the JLFET structure and proposing novel circuit designs based on this technology. The first part of this dissertation presents a comprehensive review of the existing literature on JLFETs, including their fabrication techniques, operating principles, and performance metrics. It highlights the advantages of JLFETs over traditional metal-oxide-semiconductor field-effect transistors (MOSFETs) and discusses the challenges associated with their implementation. Additionally, the review explores the limitations of conventional transistor technologies, emphasizing the need for exploring alternative device architectures. Building upon the theoretical foundation, the dissertation presents a detailed analysis of the multi-gate JLFET structure and its potential for realizing advanced functions. The study explores the impact of different design parameters, such as channel length, gate oxide thickness, and doping profiles, on the device performance. It investigates the trade-offs between power consumption, speed, and noise immunity, and proposes design guidelines for optimizing the function implementation capabilities of the JLFET. To demonstrate the practical applicability of the JLFET structure, this dissertation introduces several novel circuit designs based on this technology. These designs leverage the unique characteristics of the JLFET, such as its steep subthreshold slope and improved on/off current ratio, to implement complex functions efficiently. The proposed circuits include arithmetic units, memory cells, and digital logic gates. Detailed simulations and analyses are conducted to evaluate their performance, power consumption, and scalability. Furthermore, this dissertation explores the potential of the JLFET structure for emerging technologies, such as neuromorphic computing and bioelectronics. It investigates how the JLFET can be employed to realize energy-efficient and biocompatible devices for applications in artificial intelligence and biomedical engineering. The study investigates the compatibility of the JLFET with various materials and substrates, as well as its integration with other functional components. In conclusion, this dissertation contributes to the field of nanoelectronics by providing a comprehensive investigation into the function implementation capabilities of the multi-gate JLFET structure. It highlights the potential of this device beyond its individual transistor performance and proposes novel circuit designs based on this technology. The findings of this research pave the way for the development of advanced electronic systems that are more energy-efficient, faster, and compatible with emerging applications in diverse fields.Introduction -- Literature review -- Crosstalk principle -- Experiment of crosstalk -- Device architecture -- Simulation & results -- Conclusio