High-Concentration Systems (HCPV)

R&D Services

Our R&D services comprise designing, producing and characterizing concentrator modules and components, as well as analyzing complete systems:

Concentrator modules

Production processes

Modeling, design and simulation

Reliability and long-term durability testing

Characterizing CPV system components

PV concentrator power plants

We develop high concentration photovoltaic systems that allow III-V multi-junction solar cells to be used for terrestrial applications. To do so, we analyze and assess optical components that concentrate sunlight by a factor of 300-1000 before it is turned into electrical energy in III-V multi-junction solar cells. Within the field of concentrator systems, we work to develop and refine the entire technology chain from solar cells, concentrator optics and module production through dedicated electronics to complete systems and monitoring. One key ingredient in this technology is the development of concentrator modules, which is coordinated at Fraunhofer ISE in the Concentrator Technology and Evaluation Center (ConTEC). Research at ConTEC primarily focusses on optimizing design, manufacturing processes and CPV module reliability. Our expertise in the field of thermal, optical and electrical simulation is shared with our clients, and we optimize and develop processes and innovative systems.

One illustration of thriving module development is the FLATCON® technology devised at Fraunhofer ISE, which is now being successfully commercialized by Soitec Solar. In addition, we develop alternative module concepts, such as those using mirror optics for extremely high geometric concentration. Furthermore, we are researching the cogeneration of heat and electricity in concentrating systems with the goal of reaching system efficiencies of over 70%.

A variety of experimental methods are available for characterizing CPV components.



Within the field of high concentration PV systems we develop concentrator modules and systems, and offer:

  • Integration and testing of innovative new cells in concentrator modules
  • Experimental investigation of new concepts and components (e.g. secondary optics) for CPV
  • Design optimization and analysis using finite element methods (FEM) and computational fluid dynamics (CFD)
  • Pilot and short production runs with automated manufacturing technology (e.g. pick & place; bonded, adhesive and soldered joints)
  • Reliability and long-term stability testing
  • Lab and field measurements



Selected Research Projects



Research cooperation on innovative climate technology



Highly efficient concentrator module with GaSb-based four-junction solar cell



Solar Hydrogen Generation using a HyCon System



CPV Module in Modular Design; Subproject: Module Design and Module Performance


Current publications - High-Concentration Systems (HCPV):