The Crystal Growth Laboratory provides various R&D services which are based on its know-how in crystal growth and solidification as well as on the profound experiences of its co-workers in mechanical engineering, process analysis and computer simulation. R&D services are especially the development and optimization of equipment and processes for melt growth of crystals to be used in microelectronics, optoelectronics, communication technology, photovoltaic and microlithography. The Crystal Growth Laboratory is provided with highly efficient user friendly simulation programs, which are especially suitable for heat and mass transport calculations in high temperature equipment with complex geometry - crysvun sthamas code. Research Activities: Low Defect GaAs Semiconductor Substrates by the VGF - Technique Low Defect InP Semiconductor Substrates by the VGF - Technique 300mm Silicon Czochralski Crystal Growth Growth of CaF2 Crystals as Lenses for the DUV Lithography Chalcopyrite Semiconductors for Thin Film Solar Cells ( CIS ) Modeling of Crystal Growth Processes Support of Microgravity Experimentation by using Numerical Simulation Global Simulation of the TRI-SI Process for the Production of Photovoltaic Silicon Magnatic Fields and Microstructure Formation in Alloys