Self-Assembled Mono- and Multilayers for Functional Opto-Electronic Devices
Organic electronics pursues the fabrication of low cost, lightweight, mechanical flexible opto-electronic devices on plastic substrates eventually fabricated using roll-to-roll printing methodologies. Since opto-electronic device performance and lifetime strongly depends on the device functional interfaces, great effort has been devoted in their optimization and/or functionalization. Such functional interfaces affect charge exchange, control light confinement, enable efficient adhesion among the different layers as well as determine rheological parameters (viscosity, surface energy, wettability) for device fabrication if carried out from solution. In this chapter we describe the utilization of self-assembled monolayers (SAMs) and multilayers (SAMTs) as key elements for the realization of opto-electronic devices such as organic field-effect transistors (OFETs), organic photovoltaic cells (OPVs), organic light-emitting diodes (OLEDs), and organic nonlinear optical devices such as electro-optic (EO) modulators.