Sökning: "hydrogen passivation"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden hydrogen passivation.

  1. 1. Novel electrode and photoelectrode materials for hydrogen production based on molecular catalysts

    Författare :Andrew J. Bagnall; Leif Hammarström; Vincent Artero; Sascha Ott; Alexander Cowan; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; electrochemical mechanism; hydrogen; artificial photosynthesis; molecular catalyst; hydrogen evolution; cobalt; Kemi; Chemistry;

    Sammanfattning : The PhD project focussed on the application of a cobalt tetraazamacrocyclic complex, in the literature commonly referred to as [Co(CR)Cl2]+ as a molecular catalyst for the hydrogen evolution reaction (HER). This was within the broader scope of the EU MSCA H2020 ITN ‘eSCALED’ project, which primarily aimed to create artificial leaf devices for the storage of solar energy in chemical fuels and, as part of this, sought the development of novel bio-inspired and scalable materials. LÄS MER

  3. 2. Low-Frequency Noise in Si-Based High-Speed Bipolar Transistors

    Författare :Martin Sandén; KTH; []
    Nyckelord :bipolar junction transistor BJT ; heterojunction bipolar transistor HBT ; silicon-germanium SiGe ; polysilicon emitter; high-frequency measurement; low-frequency noise; noise modeling; hydrogen passivation; voltage controlled oscillator VCO ; pha;

    Sammanfattning : .... LÄS MER

  4. 3. Electrical Properties of Gold-related Defect Complexes in Silicon

    Författare :Einar Sveinbjörnsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DLTS; gettering; Au in Si; lithium diffusion; Au-H complexes; Au-Li complexes; deep levels; phosphorus diffusion; hydrogen in silicon;

    Sammanfattning : This thesis describes three extensive experiments concerning the properties of gold as an impurity atom in crystalline silicon. The first study is an investigation of the effect of phosphorus diffusion on the distribution of gold atoms within a silicon crystal. LÄS MER

  5. 4. Spin-dependent recombination in Ga(In)NAs alloys

    Författare :Yuttapoom Puttisong; Weimin Chen; Irina Buyanova; Qingxiang Zhao; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The abilities to control and manipulate electron spin, especially in semiconductors, lead to many interesting proposals for spin-functional devices in future spintronics and quantum information technology. A key requirement for the success of these proposals is that the spin functionality should be operational at room temperature (RT), which remains as a great challenge. LÄS MER

  7. 5. Defects and crystallinity control of perovskite films for light-emitting diodes

    Författare :Zhongcheng Yuan; Olle Inganäs; Feng Gao; David Ginger; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Metal halide perovskites are promising materials for the fabrication of cost-effective and highperformance light-emitting diodes (LEDs), due to their solution processability, high photoluminescence quantum efficiencies (PLQEs) and excellent charge transport properties. Importantly, perovskite LEDs show ultra-pure emission color, which is better than that of the state-of-the-art quantum dot LEDs (QLEDs) and organic LEDs (OLEDs), demonstrating a bright application potential for realizing vivid natural colors display in the future. LÄS MER