Sökning: "co-evaporation"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet co-evaporation.

  1. 1. Processing and characterization of silicon carbide (6H-SiC and 4H-SiC) contacts for high power and high temperature device applications

    Detta är en avhandling från Kista : Mikroelektronik och informationsteknik

    Författare :Sang Kwon Lee; KTH.; [2002]
    Nyckelord :Silicon carbide; ohmic and schottky contacts; co-evaporation; current-voltage; powre devices; nano-particles; Schottky barrier height lowering; TLM structures;

    Sammanfattning : Silicon carbide is a promising wide bandgap semiconductormaterial for high-temperature, high-power, and high-frequencydevice applications. However, there are still a number offactors that are limiting the device performance. LÄS MER

  2. 2. Electrical contacts, Ohmic and Schottky, to 4H-Silicon Carbide for device applications

    Detta är en avhandling från Stockholm : Elektrotekniska system

    Författare :Sang-Kwon Lee; KTH.; [2000]
    Nyckelord :silicon carbice; Ohmic; Schottky contacts; co-evaporation; current-voltage; capacitance-voltage measurement; power device; 4H-SiC; TLM;

    Sammanfattning : .... LÄS MER

  3. 3. Microstructure aspects of transition metal carbide thin films

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jun Lu; Uppsala universitet.; [1998]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; vapour deposition; transition metal carbide; nanocrystallinity; epitaxy; Kemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Transition metal carbides are important refractory materials used in many thin film applications. In this thesis, several transition metal carbides have been deposited using different chemical vapour deposition (CVD) and evaporation processes. In particular, the phase composition and microstructure of these carbide films have been studied. LÄS MER

  4. 4. Interaction of C60 with transition metals for thin film applications

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Lars Norin; Uppsala universitet.; [1998]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; C60; transition metals; fulleride; carbide; epitaxy; Kemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : The fullerene molecule C60 is known to undergo many different chemical reactions, including intercalation of alkali- and alkaline earth metals. Relatively little is still known about the reaction between transition metals and C60, and the objective of this thesis was therefore-to investigate the chemical interaction between C60 and some group IV-VI transition metals. LÄS MER

  5. 5. Low-temperature deposition of epitaxial transition metal carbide films and superlattices using C60 as carbon source

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Hans Högberg; Uppsala universitet.; [2000]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; fullerene; transition metals; carbides; low-temperature epitaxy; superlattices; Kemi; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : The transition metal carbides are chemical compounds with a unique set of propertiesused in many thin film applications. In this work, thin films of group 4-5 transitionmetal carbides and superlattices were deposited at low temperatures by simultaneousevaporation of C60 using either metal e-beam evaporation or d.c. magnetron sputtering. LÄS MER