Influence of crystallinity and energetics on charge separation in polymer-inorganic nanocomposite films for solar cells.

ABSTRACT: The dissociation of photogenerated excitons and the subsequent spatial separation of the charges are of crucial importance to the design of efficient donor-acceptor heterojunction solar cells. While huge progress has been made in understanding charge generation at all-organic junctions, the process in hybrid organic:inorganic systems has barely been addressed. Here, we explore the influence of energetic driving force and local crystallinity on the efficiency of charge pair generation at hybrid organic:inorganic semiconductor heterojunctions. We use x-ray diffraction, photoluminescence quenching, transient absorption spectroscopy, photovoltaic device and electroluminescence measurements to demonstrate that the dissociation of photogenerated polaron pairs at hybrid heterojunctions is assiste

SUBMITTER: Bansal N 

PROVIDER: S-EPMC3607122 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature