Receivers -- Investigation and Selection of Materials Resistant to Temperatures and Radiation to Construct a Metallic/Ceramic Secondary Concentrator as well as Measurements at Premodels -- Investigations of Hard Coating and Heat Mirrors for Simultaneous Energy Conservation in a Photovoltaic/Solarthermic Hybrid System or for Use in a Secondary Reflector -- Optimization of Terminal Concentrators -- Receivers -- 200 kW Stirling Engine for SSP Module; Solar Stirling Receiver with Heat Storage System Analysis -- The Construction of a Volumetric Receiver with a Staggered Structure -- Analysis of Convective Heat Transfer in Volumetric Receivers Built of Porous Media -- Solar Chemistry -- Thermochemical H2 - Production with Sulfur-Iodine Process and Solar Energy Adaptation -- The Use of Thermal Solar Energy to Treat Waste Materials -- Solar Thermal Energy Cycle Based on Sulfur and Sulfide Oxidizing Bacteria -- Experiments on the Decomposition of Toxic and Hazardous Chemicals under High Pressure and High Temperature Light Flux Conditions.