Essays about: "transient absorption spectroscopy"

Found 3 essays containing the words transient absorption spectroscopy.

  1. 1. Microscopic and Macroscopic Samples of Atoms in Superposition States Studied by Attosecond Pulses

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Author : Axel Stenquist; [2021]
    Keywords : Mathematical physics; Theoretical physics; Atomic physics; Attosecond physics; Ultra-fast physics; Numerical simulations; Microscopic; Mesoscopic; Macroscopic; Superposition; Light matter interaction; Quantum mechanics; Electromagnetism; Semiclassical; Attosecond transient absorption spectroscopy; ATAS; Förster resonance; FRET; Two-atom model; Inter-atomic interaction; Dipole-dipole interaction; Many-atom model; Collective coherent effects; Time-dependent configuration-interaction singles; TDCIS; Physics and Astronomy;

    Abstract : In the present thesis, the interaction between atoms in superposition states and attosecond pulses is studied from the microscopic to the macroscopic regime. Using a semi-classical framework, three different models have been explored in order to investigate attosecond light--matter interaction processes. READ MORE

  3. 2. Iron-Based Dye-Sensitized Solar Cells - From Theory to Working Solar Cell

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Linnea Lindh; [2019]
    Keywords : Dye-sensitized solar cells; Grätzel cells; solar cells of the future; solar cells of tomorrow; spectroscopy; time-resolved spectroscopy; materials chemistry; materialkemi; Chemistry;

    Abstract : In the hunt for fossile-free energy-harvesting techniques, solar cells constitute one of the most promising techniques. Today, silicon-based solar cells are the dominant technique on the market but even the Silicon solar cell has limitations which means that there is a motivation for developing new solutions. READ MORE

  4. 3. Interligand Electron Transfer Dynamics in Ruthenium Polypyridyl Complexes for Dye Sensitized Solar Cells Determined with Femtosecond Transient IR Absorption Anisotropy

    University essay from Uppsala universitet/Fysikalisk kemi

    Author : Belinda Pettersson Rimgard; [2016]
    Keywords : Interligand electron transfer; dye sensitized solar cell; ruthenium; N3; N712; transient absorption spectroscopy; ultrafast spectroscopy; anisotropy;

    Abstract : Interligand electron transfer (ILET) may be an essential parameter for the injection ofan electron from the dye into the semiconductor surface of a dye sensitized solar cell(DSSC). Without an efficient injection, competing recombination paths may become apparent. READ MORE