Sökning: "time-resolved"

Visar resultat 21 - 25 av 65 uppsatser innehållade ordet time-resolved.

1. 21. Iron-Based Dye-Sensitized Solar Cells - From Theory to Working Solar Cell

   Master-uppsats, Lunds universitet/Centrum för analys och syntes

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

   Sammanfattning : 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. LÄS MER

3. 22. Passivation of Gallium Arsenide Nanowires for Solar Cells

   Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Författare :Austin Irish; [2019]
   Nyckelord :nanowires; semiconductors; solar cells; photovoltaics; passivation; electronics; chemistry; polymers; hydrazine; plasma; gallium; arsenic; iii-v; epitaxy; photoluminescence; time-resolved; spectroscopy; Physics and Astronomy;

   Sammanfattning : A strategic and diverse set of passivation methods for gallium arsenide nanowires wasstudied. Using a time-resolved photoluminescence setup at100 Kand300 K, the radiativerecombination of charge carriers was resolved on a picosecond time scale. LÄS MER

4. 23. Making wood durable. A sustainable approachwith linseed oil

   Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Författare :Helena Olsson; [2019]
   Nyckelord :Linseed oil; Wood preservation; Nuclear Magnetic Resonance NMR ; Diffusion Ordered Spectroscopy DOSY ; Time-resolved oxidation study; Linolja; Bevarande träbehandling; Nuclear Magnetic Resonance NMR ; Diffusion Ordered Spectroscopy DOSY ; Oxidationstidsstudie;

   Sammanfattning : Linseed oil has been and is used for vast number of applications, such as in food and paint industry, and wood preservation. It is a good environmental choice, as it originates from renewable sources. Linseed oil is mainly a mixture of triglyceride of fatty acids, both saturated and mono- or polyunsaturated, which allows the oil to oxidize. LÄS MER

5. 24. Investigation of thermal conductivity in thin graphite films through time-resolved X-ray diffraction

   Kandidat-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Författare :Axel Stenquist; [2019]
   Nyckelord :Ultra fast X-ray diffraction; graphite; thin graphite films; thermal conductivity; Physics and Astronomy;

   Sammanfattning : Knowledge about thermal properties of nanoscale graphite is essential in order to realize the many promising applications of carbon based nanomaterials. This thesis reports how samples of thin graphite films on nickel substrates were investigated using time-resolved X-ray diffraction (TRXD) at the FemtoMAX beamline at the MAX IV facility. LÄS MER

7. 25. All solid state single-shot Dispersion scan (D-Scan) for ultrashort laser pulses

   Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Författare :Shekhar Jadhav; [2019]
   Nyckelord :Dispersion scan; d-scan; Single shot d-scan; Si-scan; Physics and Astronomy;

   Sammanfattning : Ultrashort laser pulses play an important role in many applications in science and technology, from attosecond science to time resolved spectroscopy and material processing. For applications of ultrashort laser pulses, it requires a complete characterization of the electric field of the pulse, which includes both phase and amplitude of the electric field. LÄS MER