Optical probes of electronic states in highly anisotropic polymeric semiconductors

we report an extensive investigation of the optical properties of highly oriented poly (p-phenilene-vinylene) (PPV), a reference material for polymeric semiconductors. This system provides an unique opportunity to study the anisotropic spectroscopic response (transmittance, reflectance and photoluminescence), thus allowing to address fundamental physical issues, which are the basic priciples operating deivices based on plastic semiconductors.