Search for dissertations about: "charge density"

Showing result 6 - 10 of 426 swedish dissertations containing the words charge density.

  2. 6. Acceptor-doped barium zirconate: Oxidation, hydration and space-charge formation

    Author : Anders Lindman; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; BaZrO3; space charge; point defects; oxidation; GW; hydration; density functional theory; grain boundaries; interatomic potential; perovskites;

    Abstract : The current production and use of fossil fuels is not sustainable and new technologies are needed to become more independent of these fuels.The hydrogen economy, with the fuel cell as an efficient converter of chemical to electrical energy, is a desirable alternative.For this to become a reality, new materials with tailored properties are required. READ MORE

  4. 7. Electronic effects at metallic surfaces and interfaces : image-state formation and charge redistribution

    Author : Stella Papadia; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; effective-medium theory; charge redistribution; heat of solution; multiple-reflection; LDA; density-functional theory; image-state; image-potential-induced resonance; LMTO-ASA; exchange-corelation potential; jellium; metallic superlattices;

    Abstract : .... READ MORE

  5. 8. Studies of Charge Transport and Energy Level in Solar Cells Based on Polymer/Fullerene Bulk Heterojunction

    Author : Abay Gadisa; Olle Inganäs; Vladimir Dyakonov; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bulk heterojunction; Charge transport; Space charge limited; Bipolar transport; Origin of open circuit voltage; Polymer-fullerene blend; Soft contact lamination; Polarized infrared emission; Physics; Fysik;

    Abstract : π-Conjugated polymers have attracted considerable attention since they are potential candidates for various opto-electronic devices such as solar cells, light emitting iodes, photodiodes, and transistors. Electronic de vices based on conjugated polymers can be easily processed at low temperature using inexpensive technologies. READ MORE

  6. 9. Theoretical Modeling of Intra- and Inter-molecular Charge Transport

    Author : Lili Lin; Yi Luo; Alessandro Troisi; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; charge transport; molecular junction; organic molecular materials; Green s function; first-principles simulation; SRA - Transport; SRA - Transport;

    Abstract : This thesis focuses on theoretical study of charge transportproperties in molecular systems. The understanding of the transportprocess and mechanism in molecular systems is essential forthe design of new functional molecular materials and molecularelectronic devices. READ MORE

  7. 10. Physiological and morphological aspects of the glomerular barrier in health and disease. Results based on experimental studies in the rat

    Author : Clara Hjalmarsson; Göteborgs universitet; []
    Keywords : glomerular permeability; isolated perfused kidney; charge; endothelial surface layer; glycocalyx; electron microscopy; orosomucoid; nephrotic syndrome; proteinuria;

    Abstract : Tremendous amounts of fluid are filtered every day through the kidneys. The anastomosing capillary loops surrounded by Bowman s capsule, forming the glomerulus, function in accordance with the interplay between the hydrostatic and the colloid osmotic pressure. The result of the action of these mechanisms is the production of primary urine. READ MORE