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Browsing by Author "Dong, Jianjun"
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Alternative Growth and Interface Passivation Techniques for SiO2 on 4H-SiC
Zhu, Xingguang (2008-12-15)
Silicon Carbide is a novel wide band gap semiconductor material with excellent thermal, chemical and electrical properties. It also shares its natural oxide SiO2 with Si, which has been widely studied and optimized for ...
Band Engineering of Perovskite Ferrite Epitaxial Thin Films for OER Catalysis
Paudel, Rajendra (2022-07-28)
Reliable energy from renewable sources via oxidation of water requires an efficient electrocatalyst. The high cost, low abundance, and poor stability of the current noble metal based electrocatalyst are a primary obstacle ...
Bulk Gallium Nitride Based Electronic Devices: Schottky Diodes, Schottky-Type Ultraviolet Photodetectors and Metal-Oxide-Semiconductor Capacitors
Zhou, Yi (2007-08-15)
Gallium Nitride (GaN) is one of most promising semiconductor materials for high power, high temperature and high frequency applications. Due to the lack of native substrates for homoepitaxial growth, GaN electronic devices ...
Characterization of Chromium Trihalide based Magnetic Tunnel Junctions via First Principles Calculations
Heath, Jonathan (2021-04-12)
At finite temperatures, free-standing two-dimensional (2D) materials were originally theorized to be thermodynamically unstable, let alone possess magnetization. However, in 2018, the first ferromagnetic 2D semiconductor ...
Equilibrium Molecular Dynamics Study of Phonon Transport Properties at High Temperatures
Avritte, Jalaan (2023-12-06) ETD File Embargoed
Thermal conductivity is a material property of great importance in many areas of physics including coat barriers, renewable energy, nano-electronic devices, and geological processes inside the Earth. At the microscopic ...
Molecular dynamics studies of phase transition of n-alkanes mixtures, coupling-decoupling mechanism affecting thermal interfacial conductance of n-alkanes and Fokker-Planck theory of lattice thermal conductivity of crystalline solids
Zeng, Yi (2019-12-05)
Renewable energy sources, such as solar energy or geothermal energy, are promising to complement or even substitute unsustainable fossil fuel energy sources in direct thermal energy utilization. The requirement of a reliable ...
One Dimensional Zinc Oxide Nanostructures for Optoelectronics Applications: Solar Cells and Photodiodes
Cheng, An-jen (2008-08-15)
Several different morphologies of one-dimensional (1-D) ZnO nanostructured arrays can be controllably synthesized using novel thermal chemical vapor deposition at low temperatures. Well aligned and two dimensional periodic ...
Optical Spectroscopy of Wide-band-gap Semiconductors: Raman and Photoluminescence of Gallium Nitride, Zinc Oxide and Their Nanostructures
Wang, Dake (2006-12-15)
Micro-Raman and photoluminescence (PL) were performed to study GaN and ZnO and their nanostructures. Various ZnO nanostructures were successfully synthesized at low temperatures using thermal chemical vapor deposition ...
Post Ion-Implantation Surface Palnarization Process for 4H-SiC Wafers Using Carbon Encapsulation Technique
Yellai, Kashyap (2006-12-15)
Metal oxide semiconductor (MOS) technology forms the core of the semiconductor power devices. The electronic properties of wide band gap semiconductor materials like 4H-SiC has attracted considerable interest for fabrication ...
Theoretical Study of Pressure-Induced Phase Transitions and Thermal Properties for Main-Group Oxides and Nitrides
Xu, Bin (2009-08-03)
Main group nitrides and oxides are important solid compounds with applications in fields ranging from structural ceramics to catalysts and electronic materials. We have theoretically investigated the pressure-induced phase ...
Theoretical Study of Thermal Properties and Thermal Conductivities of Crystals
Tang, Xiaoli (2008-08-15)
Standard first-principles total energy and force calculations were extended to the calculations of harmonic force constant matrices and third order lattice anharmonicity tensors with an efficient super-cell finite-difference ...
Transport Properties of 2D Heterostructures Determined via First Principles Calculations
Pfeifle, Adam (2023-08-03) ETD File Embargoed
Atomically thin, two-dimensional materials have demonstrated their great potentials in nanoelectronics due to their mechanical and optoelectronic properties. With atomic layers free of dangling bonds, these materials possess ...