Search for dissertations about: "MOVPE"

Showing result 26 - 30 of 33 swedish dissertations containing the word MOVPE.

  2. 26. Influence of Seed Particle Material, Preparation, and Dynamics on Nanowire Growth

    Author : Karla Hillerich; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; metal-organic vapor phase epitaxy; III-V seminconductor materials; nanowires; Fysicumarkivet A:2013:Hillerich; in situ TEM;

    Abstract : Semiconducting nanowires have attracted scientific attention for more than 20 years due to their potential applications in electronic devices, as sensors, and in solid state lighting. These applications require high quality nanowires to begin with. READ MORE

  4. 27. Block Copolymer Nanolithography for Sub-50 nm Structure Applications

    Author : Anette Löfstrand; NanoLund: Centre for Nanoscience; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Sampolymer; riktad självorganisation; ytrekonstruktion; mönsteröverföring; sekventiell infiltrationssyntes; neutronreflektometri; Block copolymer; Directed self-assembly; Surface reconstruction; Pattern transfer; Sequential infiltration synthesis; Neutron reflectometry; Fysicumarkivet A:2021:Löfstrand;

    Abstract : As high technology device patterns are continuing to move towards decreasing critical dimensions and increasing pattern density, there is a need for lithography to move in the same direction. Block copolymer (BCP) lithography is a promising technique, which has single digit nanometer resolution, has a pattern periodicity of about 7-200 nm, and easily scales up to large area at a low cost. READ MORE

  5. 28. Compound semiconductor materials and processing technologies for photonic devices and photonics integration

    Author : Carl Reuterskiöld Hedlund; Mattias Hammar; Mikael Östling; Sebastian Lourdudoss; Harri Lipsanen; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : The advancement of semiconductor optoelectronics relies extensively on materials and processing technologies of ever-increasing sophistication, such as nanometer-range lithography, epitaxial growth methods with monatomic layer control, and anisotropic etching procedures that allows for the precise sculpturing of device features even in the limit of extreme aspect ratios. However, upcoming application needs puts requirements on optimized designs or device performances, e. READ MORE

  6. 29. Optimization of Metamorphic Materials on GaAs Grown by MBE

    Author : Yuxin Song; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heterostructures; alloy graded buffer; GaAs; molecular beam epitaxy; metamorphic; threading dislocation; InGaAs;

    Abstract : Advanced epitaxial technologies such as molecular beam epitaxy (MBE) and metal-organic vapor phase epitaxy (MOVPE) have enabled the idea of semiconductor heterostructures, which built up the foundation of the fast developing information and communication technology nowadays. Lattice mismatch has been a problem limiting designs of semiconductor heterostructures. READ MORE

  7. 30. Crystal Structures in GaAs Nanowires: Growth and Characterization

    Author : Daniel Jacobsson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysicumarkivet A:2015:Jacobsson;

    Abstract : With their nanometer size cross-section and high aspect ratio, semiconducting nanowires have properties that make them promising as building blocks in future electronic and optoelectronic devices. Because of their small size, their optical and electrical properties can differ from their bulk counterparts, and their geometry allows for material combinations not accessible in thin films. READ MORE