Sökning: "surface recombination"

Visar resultat 16 - 20 av 85 avhandlingar innehållade orden surface recombination.

  1. 16. Hole Transport Materials for Solid-State Mesoscopic Solar Cells

    Författare :Lei Yang; Anders Hagfeldt; Erik Johansson; Gerrit Boschloo; Fengling Zhang; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mesoscopic solar cells; solid-state dye-sensitized solar cells; organometallic halide perovskite; hole transport materials; mesoporous TiO2; conjugated polymer; sensitizer; transient absorption spectroscopy; photo-induced absorption spectroscopy; in-situ photoelectrochemical polymerization; spiro-OMeTAD; P3HT; TPAA; MeO-TPD; bis-EDOT; DEH; Li ion migration; charge recombination; electron lifetime;

    Sammanfattning : The solid-state mesoscopic solar cells (sMSCs) have been developed as a promising alternative technology to the conventional photovoltaics. However, the device performance suffers from the low hole-mobilities and the incomplete pore filling of the hole transport materials (HTMs) into the mesoporous electrodes. LÄS MER

  2. 17. Extending Photoinduced Charge Separation. Molecular-semiconductor assemblies for solar energy conversion

    Författare :Valeria Saavedra; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Artificial photosynthesis; Back-electron transfer; Ruthenium complexes.; Dye-sensitized; Charge recombination; Charge separation; Conduction band mediated;

    Sammanfattning : The conversion of solar energy into chemical energy by harvesting visible-light with synthetic molecules presents several scientific and technological challenges. This thesis is dedicated to the investigation of approaches to long-lived charge separation, one of the crucial aspects for the photochemical generation of solar fuels. LÄS MER

  3. 18. Hidden Diversity Revealed : Genomic, Transcriptomic and Functional Studies of Diplomonads

    Författare :Jon Jerlström-Hultqvist; Staffan Svärd; Adrian Hehl; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Giardia intestinalis; Spironucleus salmonicida; Spironucleus barkhanus; intestinal parasite; hydrogenosome; mitosome; lateral gene transfer; horizontal gene transfer; diplomonad; metamonad; sexual recombination; transfection; protein complex purification; Biology with specialization in Evolutionary Organismal Biology; Biologi med inriktning mot evolutionär organismbiologi; Biologi med inriktning mot mikrobiologi; Biology with specialization in Microbiology; Biology with specialization in Molecular Biology; Biologi med inriktning mot molekylärbiologi; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

    Sammanfattning : The diplomonads are a diverse group of eukaryotic microbes found in oxygen limited environments such as the intestine of animals were they may cause severe disease. Among them, the prominent human parasite Giardia intestinalis non-invasively colonizes the small intestine of humans and animals where it induces the gastrointestinal disease giardiasis. LÄS MER

  4. 19. Light Induced Charge Generation, Recombination, and Transport in Organic Solar Cells

    Författare :Yingyot Infahsaeng; Kemisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Light-to-electricity conversion processes in organic and dye sensitized solar cells have attracted much scientific effort, aiming to understand the fundamental nature of these processes and to improve solar cell efficiency. Power conversion efficiency of such solar cells has progressed steadily in the last few decades, suggesting applicability for commercial products in the nearest future. LÄS MER

  5. 20. Aspects of DNA Strand Exchange: Recombination Proteins and Model System Studies

    Författare :Karolin Frykholm; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DNA strand exchange; cationic liposome; Rad51; Site-Specific Linear Dichroism; RecA; molecular crowding;

    Sammanfattning : DNA recombination is of fundamental importance to all living cells; it is part of the DNA repair machinery and a means to generate genetic diversity. DNA strand exchange, the exchange of strands between homologous DNA molecules, is the central reaction of the recombination process. LÄS MER