Apart from being a very challenging issue, three-dimensional order in molecular thin films is of criticalimportance to gain and exploit a series of key properties in emerging fields like organic/hybrid photovoltaics,organic thin film transistors, sensors and plastic electronics in general. For example, the development ofnanostructured bi-continuous bulk heterojunctions (BHJs) is an important advancement leading to improvedphotovoltaic power conversion efficiency with respect to planar heterojunctions. Here we show an original lowcost, easy-to-implement and multi-tasking bottom-up approaches to modulate the supramolecular morphologyin three-dimensional (3D) systems together with their optoelectronic properties, employing a “speed up andfreeze” dynamic/adaptive approach. Starting from multi-planar heterojunctions (MHJs) with programmedsequence of nanoscopic layers, we induce the formation of BHJs with bicontinuous phases by the action ofexternal stimuli. In doing this, we have employed different materials including semiconducive polymers,polymeric dielectrics and nanoparticles, investigating on the relation between the process dynamics, thematerial chemical properties and the desired thin-film order.
|Numero di pagine||1|
|Stato di pubblicazione||Published - 2013|