The objective of this thesis is to develop and high performance and durable all-solid state flexible micro-supercapacitors (micro-SC). These new solid-state micro-generators will operate over a wide temperature range (-50°C to +120°C) and exhibit exceptional lifetime and performance. The ?-SCs proposed in this thesis project are based on i) the elaboration by CVD growth of electrodes composed of silicon nanowires and nanotrees followed by a nanometric deposition of a dielectric and new electronically conductive polymer, ii) the elaboration and characterization of new copolymers based on n-type EDOTs derivativesiii) the synthesis of polymeric solid electrolytes (ESPs) based on poly(siloxane)s and ionogels iv) performance tests of different electrodes and electrolytes in three-electrode system configuration, v) elaboration of nanocomposites based on EDOT-based electronically conductive polymers and silicon nanowires covered with nanometric layers of alumina and HfO2, and v) assembly and tests of devices in rigid and flexible sandwich type configuration