Abstract : In order to study gravity influence on the growth by Travelling Heater Method of the semiconductor indium doped cadmium telluride (EURECA programme), we carried out a comparative analysis of spatial and earth experiences, completed by a numerical simulation of the fluid phase hydrodynamic using a 3D code. Our second aim was to prepare monocrystals of vanadium doped cadmium telluride by the Bridgman technology with good photorefractive properties. For a better understanding of the photorefractive effect mechanisms, the materials were characterized by Electron Paramagnetic Resonance, Magnetic Circular Dichroïsm and Photo Induced Current Transient Spectroscopy to determine the oxidation state and the vanadium levels in the forbidden band. Optical measurements (absorption, photoconductivity...) and others of the photorefractive effect were carried out. Finally, to evaluate the spatial pertinence of this growth, we studied the gravity influence on the hydrodynamical configuration of the fluid phase by numerical simulation.