Search for dissertations about: "solar-water splitting"

Found 5 swedish dissertations containing the words solar-water splitting.

  2. 1. Advanced silicon photoelectrodes for water splitting devices : design, preparation and functional characterization by photo-electrochemistry and high-energy X-ray spectroscopy

    Author : Anurag Y. Kawde; Johannes Messinger; Pieter Glatzel; Thomas Jaramillo; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Photoelectrochemical cell; photoelectrodes; solar-water splitting; artificial photosynthesis; X-ray absorption and emission spectroscopy;

    Abstract : For the last century, mankind has been hugely dependent on fossil fuels to meet its energy needs. Harnessing energy from fossil fuels led to the emission of greenhouse gases. Greenhouse gases such as CO2 are a major contributor to global warming. READ MORE

  4. 2. Growth of 3C-SiC and Graphene for Solar Water-Splitting Application

    Author : Yuchen Shi; Jianwu W. Sun; Rositsa Yakimova; Mikael Syväjärvi; Gholamreza Yazdi; Didier Chaussende; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Silicon carbide (SiC) is regarded as an important semiconductor for a variety of applications including high-temperature, high-power and high-frequency devices. The most common polytypes of SiC are hexagonal (4H- or 6H-SiC) and cubic silicon carbide (3C-SiC), which differ from each other by the ordering of the Si–C bilayers along the c-axis crystal direction. READ MORE

  5. 3. Synthesis and Characterisation of Ultra Thin Film Oxides for Energy Applications

    Author : Mattis Fondell; Mats Boman; Tomas Edvinsson; Andreas Lindblad; Christophe Detavernier; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Atomic Layer Deposition; Iron oxides; Hematite; Solar Water Splitting; Hard X-Ray Photoelectron Spectroscopy;

    Abstract : This thesis describes studies of materials which can be exploited for hydrogen production from water and sunlight. The materials investigated are maghemite (γ-Fe2O3), magnetite (Fe3O4) and especially hematite (α-Fe2O3), which is an iron oxide with most promising properties in this field. READ MORE

  6. 4. Highly Efficient CIGS Based Devices for Solar Hydrogen Production and Size Dependent Properties of ZnO Quantum Dots

    Author : T. Jesper Jacobsson; Tomas Edvinsson; Laurence Peter; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ZnO; Nanoparticles; Quanum Dots; Size Dependent Properties; Hematite; CIGS; Solar Water Splitting; Hydrogen Production; PEC; Photoelectrochemical cells; PV-electrolysis; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Abstract : Materials and device concepts for renewable solar hydrogen production, and size dependent properties of ZnO quantum dots are the two main themes of this thesis.ZnO particles with diameters less than 10 nm, which are small enough for electronic quantum confinement, were synthesized by hydrolysis in alkaline zinc acetate solutions. READ MORE

  7. 5. ZnO Quantum Dots : Size Dependent Optical, Vibrational and Photoelectrochemical Properties

    Author : Jesper Jacobsson; Tomas Edvinsson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ZnO; nanoparticels; quantum dots; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Abstract : This thesis is devoted to quantum dots of ZnO in the size regime 2.5-10 nm.The focus is directed towards their size dependent properties with specialemphasis on the optical, vibrational and photocatalytic properties. The particleswere synthesized by hydrolysis in alkaline zinc acetate solution. READ MORE