Sökning: "titanium dioxide"

Visar resultat 21 - 25 av 88 avhandlingar innehållade orden titanium dioxide.

  1. 21. Characterisation of Organic Dyes for Solid State Dye-Sensitized Solar Cells

    Författare :Ute Cappel; Anders Hagfeldt; Gerrit Boschloo; Udo Bach; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; energy alignment; hole conductor; injection; interface; perylene; photo-induced absorption; regeneration; spectroelectrochemistry; spiro-MeOTAD; Stark effect; titanium dioxide; Physical chemistry; Fysikalisk kemi; Physical Chemistry; Fysikalisk kemi;

    Sammanfattning : Energy from the sun can be converted to low cost electricity using dye-sensitized solar cells (DSCs). Dye molecules adsorbed to the surface of mesoporous TiO2 absorb light and inject electrons into the semiconductor. LÄS MER

  3. 22. Developing Environmentally Friendly Dye-sensitized Solar Cells

    Författare :Hanna Ellis; Gerrit Boschloo; Anders Hagfeldt; Erik Johansson; Aldo di Carlo; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; dye-sensitized solar cells; dye; cobalt; triphenylamine; titanium dioxide; aqueous; PEDOT; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Sammanfattning : Due to climate change and its effects, alternative renewable energy sources are needed in the future human society. In the work of this thesis, the Dye-sensitized Solar Cell (DSC) has been investigated and characterized. LÄS MER

  4. 23. Enrichment and Separation of Phosphorylated Peptides on Titanium Dioxide Surfaces : Applied and Fundamental Studies

    Författare :Anna I. K. Eriksson; Anders Hagfeldt; Katarina Edwards; Victor Agmo Hernández; Hubert Girault; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Posttranslational modification; Phosphorylation; Mass spectrometry; MALDI; Adsorption; QCM-D; Physical Chemistry; Fysikalisk kemi;

    Sammanfattning : Protein phosphorylation is a very common posttranslational modification (PTM), which lately has been found to hold the keyrole in the development of many severe diseases, including cancer. Thereby, phosphoprotein analysis tools, generally based on specific enrichment of the phosphoryl group, have been a hot topic during the last decade. LÄS MER

  5. 24. Alternative Redox Couples for Dye-Sensitized Solar Cells

    Författare :Sandra Feldt; Anders Hagfeldt; Gerrit Boschloo; Petra Cameron; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; redox mediator; triphenylamine; cobalt; ferrocene; titanium dioxide; regeneration; recombination; Physical Chemistry; Fysikalisk kemi;

    Sammanfattning : Dye-sensitized solar cells (DSCs) convert sunlight to electricity at a low cost. In the DSC, a dye anchored to a mesoporous TiO2 semiconductor is responsible for capturing the sunlight. LÄS MER

  7. 25. Nanoparticle plasmonics for solar cell applications

    Författare :Viktoria Gusak; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; titanium dioxide.; Localized Surface Plasmon Resonance; mesoporous material; Plasmonic nanoparticle; amorphous hydrogenated Silicon; solar cell; Dye-Sensitized Solar Cell; diffusion;

    Sammanfattning : The energy demand of society increases rapidly, while the main source of today’s energy, the fossil fuels, eventually will be depleted and also poses environmental and climate hazards (though the global warming). Therefore there is a need for alternative, renewable energy sources, and solar photovoltaics (solar cells) will play an important role as one of them. LÄS MER