Hojeij, M.Su, B.Tan, S.Mériguet, G.Girault, H. H.2008-05-212008-05-212008-05-21200810.1021/nn700295vhttps://infoscience.epfl.ch/handle/20.500.14299/25859WOS:000256234000025We perform in this paper a kinetic study of the photoelectrochemical responses of nanoporous thin photoactive films. The films were fabricated by by a layer-by-layer assembly of positively charged polyelectrolytes (poly-L- Lysine, pLys) and negatively charged semiconductor nanoparticles (NPs) on a carboxylic acid terminated alkanethiol-modified gold electrode. Two types of NPs were used to build uniform films: cadmium selenide (CdSe) and cadmium selenide/cadmium sulfide core/shell (CdSe@CdS). Large photocathodic and photoanodic currents were recorded for CdSe and CdSe@CdS sensitized films, respectively. A theoretical model of the photocurrent responses was developed to analyze the kinetics of photoinduced processes and coupled reactions, showing that the multilayer films behave as homogeneous nanoporous semiconducting photoelectrodes.layer-by-layerCdSeCdSe@CdSthin filmsphotocurrentphotoanodephotocathodetext::journal::journal article::research article