Sökning: "InAsP"
Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet InAsP.
1. III-V Nanowire-based Infrared Photodetectors : Design, Fabrication and Characterization
Sammanfattning : Semiconductors are the backbone of almost every electrical or optical component, one of them being photodetectors. Photodetectors are used in many applications such as digital cameras or solar panels. They can also be designed to detect the omnipresent infrared radiation, discovered in 1800, which is invisible to human eye. LÄS MER
2. Strain and Charge Transport in InAsP-InP and InP-InAs Core-Shell Nanowires
Sammanfattning : The mechanical, optical, and electrical properties of III-V semiconductor heterostructures are investigated in thisthesis. The semiconductor materials are grown by metal-organic vapor phase epitaxy, yielding wire shaped crystals(nanowires) having a length of ~ 1 μm and diameter of ~ 100 nm. LÄS MER
3. Electronic structure and optical properties of InGaAs and InAsP semiconductor quantum wires
Sammanfattning : In recent years intensive studies of semiconductor nanostructures or so-called semiconductor quantum structures have been performed in many research groups around the world. The research interest in quantum structures arises both from their potential to expose new physical phenomena in condensed matter physics, allied with fundamental quantum mechanical effects, and from their potential application in electronic and optoelectronic devices. LÄS MER
4. InP/InAsP Quantum Discs-in-Nanowire Array Photodetectors: Design, Fabrication and Optical Performance
Sammanfattning : This thesis focuses on processing and electro-optical investigations of two- and three-terminal photodetectors based on large arrays of around three million n+-i-n+ InP nanowires with embedded InAsP quantum heterostructures for broadband detection. First, we investigated the optoelectronic behavior of two-terminal photodetectors under selective 980 nm excitation of the 20 axially embedded InAsP quantum discs in each of the nanowires. LÄS MER
5. Infrared Photodetectors based on Nanowire Arrays with Embedded Quantum Heterostructures
Sammanfattning : Optical sensors operating in the infrared range of the electromagnetic spectrum are key components in a variety ofapplications including optical communication, night vision, medical diagnosis, surveillance, and astronomy.Semiconductor nanowires have great potential for realizing broadband infrared photodetectors with excellentresponsivity, low dark current and low noise, and a unique compatibility with commercial silicon-based electronics. LÄS MER
