The electrical and optical properties of tandem organic light-emitting diodes (OLEDs), in which a fluorescent and phosphorescent emitting units are connected by an organic charge-generation layer (CGL), were experimentally analyzed.To investigate the internal properties of the tandem OLEDs, we fabricated and compared two single, two homo-tandem, an

The present paper deals with the description of the technical activities conducted within the TACIS Project R2.03/97, 2 EC Contract no.30303, related to RBMK.The project activities are focused Sodas toward the setting-up of a chain of computational tools suitable for the analysis of transients expected in the RBMK nuclear power plant (NPP).The acci