Sökning: "surface passivation"
Visar resultat 11 - 15 av 65 avhandlingar innehållade orden surface passivation.
11. Dynamics of Photogenerated Charge Carriers in III-V Bulk and Nanowire Semiconductors
Sammanfattning : As a solution to solving energy consumption and environment problems, photovoltaics has become one type of the promising devices to convert solar energy into electricity directly. In some special areas like in space, a kind of photovoltaics with lightweight and reliable properties is needed to supply power. LÄS MER
12. Synchrotron X-ray based characterization of technologically relevant III-V surfaces and nanostructures
Sammanfattning : Innovative design and materials are needed to satisfy the demand for efficient and scalable devices for electronic and opto-electronic applications, such as transistors, LEDs, and solar cells. Nanostructured III-V semiconductors are an appealing solution, combining the excellent functional properties of III-V materials with the flexibility typical of nanostructures, such as the nanowires (NWs) studied here. LÄS MER
13. GaN HEMT Low Frequency Noise Characterization for Low Phase Noise Oscillator Design
Sammanfattning : The thesis presents low frequency noise (LFN) characterization of Gallium Nitride (GaN) High Electron Mobility Transistors (HEMTs) for low phase noise oscillator design. First, GaN HEMT technology is benchmarked versus other transistor technologies, e.g. LÄS MER
14. Impact of Ionizing Radiation on 4H-SiC Devices
Sammanfattning : Electronic components, based on current semiconductor technologies and operating in radiation rich environments, suffer degradation of their performance as a result of radiation exposure. Silicon carbide (SiC) provides an alternate solution as a radiation hard material, because of its wide bandgap and higher atomic displacement energies, for devices intended for radiation environment applications. LÄS MER
15. Advanced III-Nitride Technology for mm-Wave Applications
Sammanfattning : Within wireless communication, there is a continuously growing need for more bandwidth due to an increasing number of users and data intense services. The development within sensor systems such as radars, is largely driven by the need for increased detection range and robustness. LÄS MER