Sökning: "Schottky depletion"
Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Schottky depletion.
1. Resonant Tunneling in Laterally Confined Quantum Structures
Sammanfattning : In the thesis, three-dimensionally confined resonant tunneling structures were studied experimentally. Two approaches were used for obtaining quantum confinement: gate-defined lateral constriction of double barrier structures, and epitaxial growth of self-assembled quantum dots. LÄS MER
2. Atom-Probe Field-Ion Microscopy of Electronic Materials
Sammanfattning : This thesis presents work in which atom-probe field-ion microscopy (APFIM) has been applied to two types of electronic materials. In the case of metal/GaAs contacts, the purpose was to characterise the microstructure of the contact interface, particularly the chemical composition variation across the interface. LÄS MER
3. Nanoscale Characterisation of Barriers to Electron Conduction in ZnO Varistor Materials
Sammanfattning : The work presented in this thesis is concerned with the microstructure of zinc oxide varistor materials used in surge protecting devices. This class of material has been characterised with special emphasis on the functional microstructure and the development of the microstructure during sintering. LÄS MER
4. MOVPE Growth and Characterization of Low-Dimensional III-V Semiconductor Structures
Sammanfattning : Metalorganic vapour phase epitaxy is used for growth of low-dimensional III-V semiconductor structures. The roughness of heterointerfaces in GaAs/GaInP quantum well structures is studied by photoluminescence emission from extremely narrow quantum wells. LÄS MER
5. Tunneling Based Electronic Devices
Sammanfattning : This thesis concerns different kinds of tunneling based devices all showing negative differential resistance. The thesis is divided in three parts, resonant tunneling transistors, Esaki diodes and coupled zero dimensional systems. LÄS MER