Polymer: Inorganic nanoparticle hybrid UV-photodetector design, production and performance investigations

In this thesis organic and organic:inorganic hybrid UV photodetectors with enhanced photocurrent responses are prepared and characterized optically and electrically. With this aim, a fluorene type polymer, poly(9,9-dioctyl fluorenyl-2,7–yleneethynylene (PFE) is chosen as the p-type material and the effects of different n-type materials are observed. As a summary, (i) PFE is doped with buthylnapthalenedimide (BNDI) organic semiconductor, (ii) PFE:BNDI is doped with titaniumdioxide (TiO2) inorganic semiconductor, (iii) PFE is doped with zincoxide (ZnO) metaloxide inorganic semiconductor and (iv) PFE:BNDI is doped with ZnO metaloxide semiconductor are used as active layer in conventional and/or inverted type photodetectors. Maximum photoresponses from these studies were; 410 mA/W, 597 mA/W, 375 mA/W and 651 mA/W, respectively.