Saad, Ruqayyah Albin2022-05-182022-05-182017726https://drepo.sdl.edu.sa/handle/20.500.14154/3546this thesis we spotlight on one of the conjugated semiconducting polymer POLY (3-OCTYLTHIOPHENE) (P3OT) and its Multi Walled Carbon Nanotubs (MWCNTs) nanocomposite, which occupied a large interest in the research studies and applications. A review of some definitions, concepts, classifications and applications of polymers and polymer composite was illustrated. We have used in our research one of the most promising polymeric materials which is (P3OT) that fall under conjugating conducting polymerenThesis