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 20 of 34 for “"electronic transport properties"”.
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Electronic transport properties of thin films of amorphous silicon
… films of amorphous Silicon, and to evaluate the electronic transport properties of the material prepared over a wide range of deposition conditions, and (iii) to investigate the electronic transport properties of thin films of co-sputtered Silicon-Aluminium and Silicon-Antimony, and to evaluate …
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The electronic transport properties of undoped and doped arsenic triselenide
The electronic and transport properties of doped and undoped arsenic triselenide have been characterised in an extensive study. Measurement of optical absorption, d.c, conductivity, thermoelectric power and fast charge transient photoconductivity were made. In addition, an improved time of flight …
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Fabrication and Electronic Transport Properties of Underdoped High Temperature Superconductor Nanowires
… in the high-Tc cuprates, we have measured the electronic transport properties of underdoped, high-Tc nanowires and nanostructures. The sizes of the samples involved allow for the investigation of the electronic structure on a mesoscopic length scale. We have measured current-voltage …
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Fabrication and Electronic Transport properties of Underdoped High Temperature Superconductor Nanowires
… in the high-Tc cuprates, we have measured the electronic transport properties of underdoped, high-Tc nanowires and nanostructures. The sizes of the samples involved allow for the investigation of the electronic structure on a mesoscopic length scale. We have measured current-voltage …
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Electronic transport properties of carbon nanotubes: the impact of atomic charged impurities
… nanoscale materials is expected to alter their properties due to their small physical sizes. Such sensitivity can be utilized to modify materials' properties from bottom up and is essential for the utility of nanoscale materials. As such, the impact of extrinsic atomic adsorbates was measured on …
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SYNTHESIS, ELECTRONIC AND OPTO-ELECTRONIC TRANSPORT PROPERTIES OF ATOMICALLY THIN 2D LAYERS OF MoS2, WSe2 and CuIn7Se11
… materials show remarkable promise for future electronic and opto-electronics applications. The scope of this dissertation, thus, broadly covers the electronic and opto-electronic properties of such few layered 2D materials. Extensive investigation of electronic and opto-electronic transport …
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An Irreversible Thermodynamic Formalism of the Electronic Contribution to the Entropy in Metals
… thermodynamic formalism to quantify the electronic contribution to the entropy in metals and alloys. We demonstrate the utility in our proposed approach by rationalizing the entropy of phase transitions in metal-insulator, order-disorder, and allotropic transitions with current models of …
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Molybdenum chalcohalide nanowires as building blocks of nanodevices
… nanowires are systems, which structural, electronic and optical properties have been analyzed in detail. However, their potential as building blocks for electronic devices has not been investigated so far. This question is raised in Dissertation, focusing on unique electronic transport …
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Purity matters : enhancing carrier transport properties in tin sulfide for photovoltaic applications by reducing impurity content
… applications, is hampered by poor carrier-transport properties, particularly minority-carrier lifetime. This study investigates the role of intrinsic and extrinsic crystallographic point defects on the electronic transport properties of SnS. High-purity SnS is grown via sulfurization of tin …
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Defect and electrical properties of high-K̳ dielectric Gd₂O₃ for magneto-ionic and memristive memory devices
… that has exhibited a variety of electrolytic properties during the development and operation of the first magneto-ionic devices developed at MIT. Specifically, we focused our investigation on the defect chemistry and electrical properties of Gd₂O₃ in order to better understand the relationship …
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Electronic Transport in Thermoelectric Bismuth Telluride
<p>An experimental investigation of the electronic transport properties of bismuth telluride nanocomposite materials is presented. The primary transport measurements are electrical conductivity, Seebeck coefficient and Hall effect. An experimental apparatus for measuring Hall effect and electrical …
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The Hofstadter spectrum of monolayer and bilayer graphene van der Waals heterostructures with boron nitride
In this thesis, we consider the electronic properties of materials created by stacking two-dimensional graphene layers. The first material is a heterostructure created by placing a graphene layer on top of a layer of hexagonal boron nitride. The energy bands are determined as well as the energy …
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Tunable spin polarization and conductance anomalies in mesoscopic one-dimensional systems
The electronic transport properties of mesoscopic one-dimensional (1D) devices have attracted significant interest because of their potential applications and their unique characteristics, some of which – for instance, the “0.7” conductance anomaly in quantum point contacts – have remained …
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Growth and magnetotransport studies of epitaxial graphene
… their surface morphology, crystallography and electronic transport properties are investigated in order to gain insight into the growth process with a view to improving the quality of the graphene (assessed in terms of lateral grain size, and coherence of electronic transport). Graphene quality …
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Quantum transport in graphene nanotransistors
… has exploded, owing to its unique electrical properties. Narrow strips of graphene, called graphene nanoribbons, also display exotic behavior. A nanoribbon’s edge geometry determines its electronic transport properties, and the rich behavior of conductance of nanoribbons in response to …
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Uniaxial Strain Effect on Graphene-Nanoribbon Resonant Tunneling Transistors
… crystal with unique thermal, mechanical, and electronic transport properties such as the high mobility of carriers, perfect 2- D confinement and linear dispersion, etc., has been attracted many interest as a promising candidate for nano-scale devices over the past decades. Multilayer stacks of …
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Voltage programmable materials
The physical and chemical properties of nanoscale materials derive largely from structure and composition at interfaces. The possibility to electrically modify these interfacial characteristics would provide a powerful means to control material properties. Of particular recent scientific and …
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Structural and magnetic properties of Ni and Cr substituted La₀.₇Sr₀.₃MnO₃
… due to their large magnetoresistance, and electronic transport properties that change significantly, depending on values of x and which transition metal used. Their applications in technology include cathodes for solid oxide fuel cells, resistance random access memory and catalysis. At …
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Spin-Mediated Transport in Superconducting and Spin-Polarized Systems
The effects of spin-imbalance on the electronic transport properties of spin-polarized and superconducting systems have been studied in detail. The transport properties of the quaternary Heusler alloys Co2MnSi1-xAlx (0≤x≤1), which have been theoretically predicted to develop a half-metallic band …
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