Generation and recombination of excited states in organic semiconductors

摘要: Since the discovery of light emitting properties on phenyl–based organic semiconductors in 90’s, considerable efforts have been devoted to study photophysical applications conjugated polymers for development new technologies optoelectronic devices. The potential advantages terms ease synthesis, flexibility, low cost, and large-area capability make attractive electronics industry, particularly when it comes promising a display technology. There are many such as Organic Solar Cells, Thin–Film Transistors, Light Emitting Diodes (OLEDs). recombination dynamics between quasi–particles, order generate excited species, has identified an important process these applications. Furthermore, products arising from mechanism well their final yields, shown be directly related devices performance. One significant challenges science technology is characterization temperature impurity effects generation quasi–particles. Thus, understanding how play role changing formation fundamental importance more efficient In this thesis, quasi–particles numerically investigated under influence impurities, Coulomb interactions, external electric field. aim work give physical picture yields derived different kinds semiconductors, above–mentioned considered contribute processes, which may provide guidance improve, example, electroluminescence OLEDs.