Structural, optical and electrical studies of several hybrids of organic and inorganic nanostructures as well as core shell nanocrystalline structures will be presented. The effects of thermal annealing on the morphological and photoconductive properties of cadmium selenide quantum dots coreshell quantum dots together with indicate that there are collective events happening due to annealing. Two different types of hybrid structures will be discussed. Optical and electrical experimental results in semiconductor nanostructures in conductive polymers as well as those that were integrated into the organic photosystem I (PS1), as part of an artificial light harvesting complex (LHC) will be presented.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.