Sökning: "Charge separation"

Visar resultat 16 - 20 av 168 avhandlingar innehållade orden Charge separation.

1. 16. The Far-Red Limit of Photosynthesis

   Författare :Fredrik Mokvist; Stenbjörn Styring; Tomáš Polívka; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Far-red light; Photosystem I; Photosystem II; P700; P680; EPR; Charge Separation; Chemistry with specialization in Molecular Biomimetics; Kemi med inriktning mot molekylär biomimetik;

   Sammanfattning : The photosynthetic process has the unique ability to capture energy from sunlight and accumulate that energy in sugars and starch. This thesis deals with the light driven part of photosynthesis. LÄS MER

3. 17. Studying Morphology Formation and Charge Separation in Organic Solar Cells

   Författare :Yanfeng Liu; Fengling Zhang; Olle Inganäs; Jonas Bergqvist; Christoph J. Brabec; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : We are currently living in the era of automation and artificial intelligence, which requires more energy than ever before. Meanwhile, the reduction of carbon footprint is needed for keeping the environment sustainable. Exploring green energy is crucial. Solar power is one of the green energy sources. LÄS MER

4. 18. Nanomechanics – Quantum Size Effects, Contacts, and Triboelectricity

   Författare :Martin Olsen; Jonas Örtegren; Håkan Olin; Per Gradin; Peter Glans; Rusen Yang; Mittuniversitetet; []
   Nyckelord :triboelectricity; adatom; ion; charge; mound; quantum size effect; triboelctric nanogenerator; TENG; wind driven; contact; nanomechanics; fri electron model; nanowire cantilever;

   Sammanfattning : Nanomechanics is different from the mechanics that we experience in everyday life. At the nano-scale, typically defined as 1 to 100 nanometers, some phenomena are of crucial importance, while the same phenomena can be completely neglected on a larger scale. LÄS MER

5. 19. Photoinduced Processes in Molecular-Inorganic Materials - Design Strategies for Control of Photophysical and Photochemical Processes

   Författare :Elin Sundin; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Photochemistry; hybrid materials; solar energy conversion; charge separation; electron transfer; singlet fission; dye-sensitized semiconductors; mechanistic studies;

   Sammanfattning : Sunlight is the most abundant renewable energy resource on Earth and has the potential to provide our society with clean energy. Despite this abundancy, solar energy corresponds to only a minority of the global energy production. Two major reasons for this are the limited efficiencies of solar cells and the difficulty of storing solar energy. LÄS MER

7. 20. Charge Separation on Localized Surface Plasmon and Hot Carrier Transfer to Semiconductors

   Författare :Yocefu Hattori; Jacinto Sá; Stephan Link; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Plasmonics; hot carrier; metal nanoparticles; semiconductors; ultrafast transient absorption spectroscopy; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

   Sammanfattning : The relatively recent discovery that plasmonic nanoparticles generate energetic electron-hole pairs known as hot carriers has been the source of interest from many scientific groups. The capability to extract these short-lived hot carriers from metal nanoparticles (NPs) might potentially lead to applications in solar cells, photodetection, and photocatalysis. LÄS MER