Sökning: "transient absorption spectroscopy"

Visar resultat 1 - 5 av 33 avhandlingar innehållade orden transient absorption spectroscopy.

  1. 1. Ultrafast, Non-Equilibrium Electron Transfer Reactions of Molecular Complexes in Solution

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jonas Petersson; Uppsala universitet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron transfer; laser; spectroscopy; transient absorption; anisortopy; inter ligand electron transfer; dye sensitized solar cell; DSSC; vibrational relaxation; ultrafast dynamics; fs spectroscopy; Kemi med inriktning mot kemisk fysik; Chemistry with specialization in Chemical Physics;

    Sammanfattning : Photoinduced electron transfer is a fundamentally interesting process; it occurs everywhere in the natural world. Studies on electron transfer shed light on questions about the interaction between molecules and how the dynamics of these can be utilized to steer the electron transfer processes to achieve a desired goal. LÄS MER

  2. 2. Energy migration and charge formation in conjugated polymers

    Detta är en avhandling från Yuri Zaushitsyn, Cmem. Phys., Lund University

    Författare :Yuri Zaushitsyn; Lunds universitet.; Lund University.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; magnetic resonance; relaxation; spectroscopy; Kondenserade materiens egenskaper:elektronstruktur; egenskaper elektriska; magnetiska och optiska ; supraledare; magnetisk resonans; spektroskopi; supraconductors; magnetic and optical properties; electrical; energy transfer; Physics; Fysik; Condensed matter:electronic structure; transient absorption spectroscopy; conjugated polymer; charge photogeneration;

    Sammanfattning : Popular Abstract in Swedish I detta projekt studerar vi reaktioner som är av betydelse för omvandling av ljusenergi till elektricitet eller bränsle. Materialen är nya typer av organiska polymermaterial som kan ge morgondagens energisnåla och miljövänliga solceller, TV- och datorskärmar, ljuskällor, mm. LÄS MER

  3. 3. Exploring Electron Transfer Dynamics of Novel Dye Sensitized Photocathodes Towards Solar Cells and Solar Fuels

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Lei Zhang; Uppsala universitet.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron transfer; Laser spectroscopy; Femtosecond spectroscopy; Transient absorption; NiO; DSSCs; DSSFDs; Charge separation; Solar energy conversion; Nanosecond photolysis; Photophysics; Kemi med inriktning mot kemisk fysik; Chemistry with specialization in Chemical Physics;

    Sammanfattning : The design of dyes for NiO-based dye-sensitized solar cells (DSSCs) has drawn attention owing to their potential applications in photocatalysis and because they are indispensable for the development of tandem dye-sensitized solar cells. The understanding of the electron transfer mechanisms and dynamics is beneficial to guide further dye design and further improve the performance of photocathode in solar cells and solar fuel devices. LÄS MER

  4. 4. Stepping into Catalysis Kinetic and Mechanistic Investigations of Photo- and Electrocatalytic Hydrogen Production with Natural and Synthetic Molecular Catalysts

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Daniel Streich; Uppsala universitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Artificial photosynthesis; photocatalysis; electrocatalysis; hydrogen production; proton reduction; hydrogenase; iron complex; active site model; catalytic mechanism; transient absorption; spectroscopy; electrochemistry; cyclic voltammetry; Kemi med inriktning mot kemisk fysik; Chemistry with specialization in Chemical Physics;

    Sammanfattning : In light of its rapidly growing energy demand, human society has an urgent need to become much more strongly reliant on renewable and sustainable energy carriers. Molecular hydrogen made from water with solar energy could provide an ideal case. LÄS MER

  5. 5. Time resolved laser spectroscopy

    Detta är en avhandling från Stockholm : Fysik

    Författare :Karin Ekvall; KTH.; [2000]
    Nyckelord :non-linear polarisation; third and fifth order susceptibility; cross phase modulation; transient absorption femtosecond spectroscopy;

    Sammanfattning : .... LÄS MER