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Hittade 4 uppsatser som matchar ovanstående sökkriterier.

  1. 1. In-Situ Investigation of Particle Assisted GaSb Nucleation Using Environmental TEM

    Master-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Aidas Urbonavicius; [2023]
    Nyckelord :ETEM; Nucleation; GaSb; Nanowires; Materials chemistry; Technology and Engineering; Chemistry;

    Sammanfattning : III-V semiconductor material based nanowires have been extensively studied and shown to be a very exciting building block for future electronics. Material systems such as GaSb show a lot of promise in optoelectric and thermoelectric generation applications because of its high electron mobility and small bandgap. LÄS MER

  3. 2. Femtosecond Photoemission Electron Microscopy of Indium Arsenide Nanowires

    Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Björn Johansson; [2018]
    Nyckelord :Indium Arsenide; PEEM; Femtosecond laser; Time-resolved PEEM; InAs; Wurtzite; zinc blende; pump-probe; Photoemission Electron Microscopy; pulsed laser.; Physics and Astronomy;

    Sammanfattning : PhotoEmission Electron Microscopy (PEEM) has proven to be a successful method for examining the electronic characteristics of nanostructures. The experiments relevant for the following report were conducted using a combination of PEEM and a femtosecond pulsed laser to determine the electrical characteristics of Indium Arsenide nanowire of crystal structure varying between wurtzite and zinc blend. LÄS MER

  4. 3. Electrical and Optical Characterization of InAsP/InP Nanowire-Based Avalanche Photodetectors

    Magister-uppsats, Högskolan i Halmstad/Fotonik

    Författare :Praveen Kumar Singaravelu; Tawhidul Alam Mohammad; [2016]
    Nyckelord :;

    Sammanfattning : The availability of new manufacturing methodology in solid state physics makes it possible to grow nano-photonic devices for better performance and unique properties. In this thesis work, we use I-V and FTIR spectroscopy to study the electrical and optical properties of InAsP/InP nanowire-based array avalanche photodetectors for near infrared applications. LÄS MER

  5. 4. Infuence of surface and crystal structure on the conductivity of individual InAs and InP nanowires

    Kandidat-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Lena Isabel Tamara Kral; [2015]
    Nyckelord :semiconducting nanowire; zinc blende; wutzite; hydrogen cleaning; STM; oxidation; photovoltaic response; photovoltaics; top contact method; InAs; nanowire; InP; Physics and Astronomy;

    Sammanfattning : To satisfy the great need for (opto-)electronic devices to become smaller and more efficient in energy and price, research is done on semiconducting III-V nanowires (NWs). Electrical devices using NWs show noteworthy assets being fast-paced with high-speed electronics and low power consumption, one of which are high-efficient solar cells at a moderate price. LÄS MER