Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Semiconductor properties"”.
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Planar Tunneling Spectroscopy of Thin-Film Niobium, Niobium/normal Metal and Niobium/semicondutor Structures
The superconductor-semiconductor study was performed on Nb-InGaAs bilayers. The Schottky barrier formed at the interface between these two materials was utilized as a tunneling barrier. A method was developed to fabricate small area junctions. The tunneling conductance as a function of …
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Innovative techniques for conformal doping of semiconductors for applications in micro- and nano-electronics
… better understand this work, the main aspects of semiconductor properties, the techniques commonly used for doping these materials and the MD are briefly recalled. In chapter 2 some aspects of MD are discussed. In particular a physico-chemical characterization of molecular precursors in standard …
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Planar tunneling spectroscopy of thin-film Nb, Nb/normal metal and Nb/semiconductor structures
… thin-film niobium and both normal metals and semiconductors have been investigated. A thickness dependence of the superconducting critical temperature Tc and the superconducting gap parameter Δ have been observed for thin film superconductor/normal metal structures. Although many studies …
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Analysis And Simulation Tools For Solar Array Power Systems
… structure of solar cell elements, including semiconductor properties, allows simulation of electrical properties as well as the evaluation of the impact of environmental conditions. A second developed tool provides a co-simulation platform with the capability to verify the performance of an …
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Experimental studies of heat transport across material interfaces at the nano and micro scales
… to have precise knowledge of materials' thermal properties at the nano and micro scales. Here we present a series of experimental studies of heat transport for two different types of material: a two dimensional (2D) material such as MoS2 and micron scale particles. We used frequency domain …
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Carbon Nitride and Conjugated Polymer Composite Materials
The semiconductor and photovoltaic properties of carbon nitride (CNx) thin films prepared using a reactive magnetron sputtering technique were investigated both individually and as composites with the organic conjugated polymers polybithiophene (PBT) and poly(3-hextlthiophene) (P3HT). At low …
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Synthesis and characterization of TiO2 nanotube Schottky diodes
Metal-semiconductor interfaces on one-dimensional (1D) nanostructures represent crucial building blocks for next-generation nanoelectronics. Over the past two decades, chemically synthesized titanium dioxide nanotubes (TiO2-NTs) have gained a considerable amount of interest due to their high …
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Using electrochemical impedance spectroscopy to characterize vertically-aligned carbon nanotube forest porosimetry
… and potential applications due to their unique properties such as their high tensile strength, high thermal conductivity, and unique semiconductor properties. Vertically-aligned carbon nanotubes (VA-CNTs) have been used in applications for electrochemical systems in energy storage systems and …
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Electrical properties of metal semiconductor contacts - metals on MoS2: a case study
Properties of monolayer semiconductor, MoS2, are presented in the research. Schottky barrier height and Schottky-Mott rules are discussed. The current-voltage measurement and capacitance-voltage measurement are analyzed considering the role of the work function. We mainly focus on metal …
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An investigation into the ferric leaching of chalcopyrite : a sub-process in the bioleaching of chalcopyrite
… investigations are underway to establish whether semiconductor properties of the mineral affects the type of passivating layer formed. To date, most of the work has been performed at temperatures higher than those at which chalcopyrite bioleaching occurs and with varying pH and redox potentials. …
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Surface Acoustic Waves Propagation and Coupling Fields in Piezomagnetic and Piezoelectric Semiconductor Layered Structures
Piezoelectric semiconductors (PSs) are functional materials with both piezoelectric and semiconductor properties. The core property of PSs is the multi-field coupling effect of mechanical-electro-carrier, and its multiple properties are adapting to the needs of the rapid development of electronic …
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THE ROLE OF NATIVE POINT DEFECTS AND SURFACE CHEMICAL REACTIONS IN THE FORMATION OF SCHOTTKY BARRIERS AND HIGH N-TYPE DOPING IN ZINC OXIDE
… interest in recent years due to its exciting semiconductor properties and remarkable ability to grow nanostructures. As a wide band gap semiconductor, ZnO has many potential future applications including blue/UV light emitters, transparent conductors, biosensors, and electronic nanoscale …
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Nanostructured Porous High Surface Area Ceramics for Catalytic Applications
… inertness, high thermal conductivity and semiconductor properties. In contrast to the nanocasting approach, based on the complete pore filling, also a new in-situ procedure for the preparation of finely dispersed metal and metal oxide particles inside ordered mesoporous silica was …
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Morphology, charge transport properties, and molecular doping of thiophene-based organic semiconducting thin films
Organic semiconductors combine the benefits of organic materials, i.e., low-cost production, mechanical flexibility, lightweight, and robustness, with the fundamental semiconductor properties light absorption, emission, and electrical conductivity. This class of material has several advantages over …
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Hybrid Carbon Fiber/ZnO Nanowires Polymeric Composite for Stuctural and Energy Harvesting Applications
… NWs functionally-graded the composite material properties and ensured effective load transfer across the interface. To assess the influence of the ZnO NWs growth, reference samples were also prepared by exposing the carbon fabric to the hydrothermal conditions. The damping properties of the …