Search for dissertations about: "Charge carriers"

Showing result 1 - 5 of 120 swedish dissertations containing the words Charge carriers.

2. 1. Charge transport in polymer-based insulating materials for high voltage applications: effect of single- and multi-layered structures

   Author : Tuan Anh Hoang; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; charge trapping and de-trapping; polyethylene; surface potential decay; enamel insulation; charge transport; charging current; charge injection; charge mobility; DC conductivity; nanocomposite;

   Abstract : Polymer composites have been widely employed as electrical insulating materials for high voltage components and devices such as power cables, gas-insulated systems, rotating machines, line and post insulators, etc. Such materials are usually made by introducing inorganic oxides (SiO2, TiO2, Al2O3, MgO) into polymeric matrices e.g. READ MORE

4. 2. Interfacial Analysis and Charge Transfer in Solar Cells

   Author : Xinjian Geng; Jacinto Sá; Ellen Moons; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Perovskites; Charge Transport Layer; Plasmonics; Hot Carriers; Interfaces; Photoluminescence; Solar Cells; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

   Abstract : Harnessing sunlight through solar cells is vital for sustainable energy production. The conventional architecture of a solar cell consists of multilayers of materials, each serving a particular function. The absorbing layer converts the solar energy into valuable electricity by the photovoltaic effect. READ MORE

5. 3. 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. 4. Monte Carlo Studies of Charge Transport Below the Mobility Edge

   Author : Mattias Jakobsson; Sven Stafström; Patrick Norman; Jérôme Cornil; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Monte Carlo simulation; charge transport; organic materials; conjugated polymers; DNA;

   Abstract : Charge transport below the mobility edge, where the charge carriers are hopping between localized electronic states, is the dominant charge transport mechanism in a wide range of disordered materials. This type of incoherent charge transport is fundamentally different from the coherent charge transport in ordered crystalline materials. READ MORE

7. 5. Ionic and electronic transport in electrochemical and polymer based systems

   Author : Anton Volkov; Igor Zozoulenko; Magnus Berggren; Xavier Crispin; Yury Gogotsi; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Modeling; Charge transport; Charge carriers Electrochemical systems; Polymer; PEDOT:PSS; Supercapacitance; Cyclic voltammetry; double layers; Nernst-Planck-Poisson; DFT; TDDFT; Ion Bipolar Junction Transistor; ETE-S;

   Abstract : Electrochemical systems, which rely on coupled phenomena of the chemical change and electricity, have been utilized for development an interface between biological systems and conventional electronics.  The development and detailed understanding of the operation mechanism of such interfaces have a great importance to many fields within life science and conventional electronics. READ MORE