The development of semiconductor films from nanocrystal solutions is a promising alternative to conventional methods of film deposition. The benefits are significant cost reduction and the possibility of tuning the charges energy in nanocrystals via nanoparticle size. These advantages of nanocrystal films may be deployed for the fabrication of solution-processed solar cells and LEDs. Our research is focused on the strategy development for low-temperature processing of colloidal nanocrystals into all-inorganic films through encapsulation of nanocrystal arrays into a matrix of a bulk semiconductor. For investigating charge transfer characteristics, PbS/CdS nanocrystals are used to reveal the influence of the distance between individual quantum dots in the array on the current. Moreover, the influence of the film surface passivation and the presence of ligands on the charge carrier mobility are discussed as well.

Semicondutor matrix encapsulated nanocrystal arrays for solar energy generation

244th National Meeting (2012)

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