Progress in the synthesis of poly(3-hexylthiophene).- Morphology of P3HT in Thin Films in Relation to Optical and Electrical Properties.- Epitaxy: a versatile method to orient and nanostructure P3HT.- P3HT and other polythiophene field-effect transistors.- Morphology and charge transport in poly(3-hexylthiophene): A theorist's Perspective.- P3HT-based solar cells: Structural properties and photovoltaic performance.