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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 13 of 13 for “"doped semiconductors"”.
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Highly doped semiconductors for plasmonic waveguides and flat-composite gratings
Doped semiconductors are investigated as a foundation for plasmonic waveguides and gratings in the mid-infrared. The potential applications of plasmonics to the MIR are reviewed, along with a brief derivation of a mathematical formalism for hybrid plasmonic waveguides which utilize both doped …
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Infrared absorption in doped semiconductors due to direct intersubband transitions
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1993.
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Graphene Field-Effect Transistors on p-doped Semiconductors for Photodetection
… light below the bandgap illumination for both p-doped substrates. NEP and D* values of these detectors have been characterized along with response time characteristics. The NEP and D∗ values for both detectors are around 10−15 W/√ and 1012 Jones respectively, indicating a sensitive …
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Many-body effects in metals, modulation doped quantum wells and doped semiconductors
… valence hole, which is realized in modulation doped quantum wells or wires. In this case we approximately diagonalize the Hamiltonian by treating exactly the most important terms leading to nonperturbative behavior. The terms neglected are identified and can be treated in perturbation theory. …
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Electrostatic force balance microscopy
… biased conductors buried in insulators below doped semiconductors. This Heterodyne-Electrostatic Force Balance Microscope (H-EFBM) uses a capacitive microcantilever to electrically stimulate thin layers of doped semiconductors, locally depleting the layer to create a “virtual aperture” while …
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Noisy Transport in Reaction-Diffusion Systems With Quenched Disorder
… including the theory of hopping conduction in doped semiconductors and first passage percolation. These tools will allow for predictions to be made for a number of important transport-related features: the infection time, or time needed for the population to traverse the system; the velocity of …
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Understanding, constructing, and probing highly-entangled phases of quantum matter
… vicinity of the metal-insulator transition in doped semiconductors is explored, and optical conductivity is developed as an experimental tool to examine the nature of the QSL candidate Herbertsmithite. The material of this thesis is closely parallels that of Refs [1, 2, 3, 4, 5, 7,8, 9,10, 11].
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Photoacoustic measurement of bandgaps of thermoelectric materials
… materials, usually consisting of highly doped semiconductors. The key to maximizing their thermal to electrical energy conversion lies in optimizing three inter-related material properties, thermal conductivity, electrical conductivity, and Seebeck coefficient. All three properties are …
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Quantum Semiconductor Structures Dressed with Terahertz Cavity Photons
… and controlling material properties with light. Semiconductors – especially quantum semiconductor structures – offer a variety of engineerable platforms for cQED studies due to their highly tunable properties and well-established fabrication techniques. Both high-quality-factor cavities and …
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Template Directed Growth of Nb doped SrTiO₃ using Pulsed Laser Deposition
… a wide range of physical properties. Recently, doped complex oxides have drawn considerable attention for various applications including thermoelectrics. Doped complex oxide materials have high Seebeck coefficients (S) and electrical conductivities (o) comparable to other doped semiconductors …
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Reduced Indium Tin Oxide as a Transparent Superconductor
… frequencies [5]. However, certain degenerately doped semiconductors known as transparent conductive oxides have ultraviolet band gap energies, high mobilities, and low carrier concentrations, thus allowing for both good conduction and optical transparency. Under the right conditions, these …
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Electronic properties of topological semimetal candidates ACd$_2$Pn$_2$ (A = Eu, Sr; Pn = As, Sb)
… that EuCd$_2$Sb$_2$ and SrCd$_2$Sb$_2$ are hole-doped semiconductors. Our results suggest that the use of local functionals strongly overestimates the topological region in the prediction and design of topological phases in ACd$_2$Pn$_2$.