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At the European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) 2010 the Fraunhofer IPMS presents demonstrators of organic solar cells.  

Large solar cell module based on organic solar cells  

Scientists of the Fraunhofer IPMS succeeded in fabricating a large solar cell module (80 x 20 cm²) based on organic solar cells, which will be presented for the first time at the EU PVSEC 2010. The organic solar cells made and developed by the Fraunhofer IPMS are based on organic molecules, evaporated under high vacuum conditions. Therefore the molecules are deposited on a transparent conductive substrate like glass or web by physical vapour deposition.  

The institute director, Professor Karl Leo, comments: “The simple fabrication process and the use of reasonably priced materials enables a very cost-efficient production of organic solar cell modules. In general the conductive substrate is structured by laser, coated with the organic materials and a metal electrode and encapsulated. No further steps are necessary and the monolithic circuit is completed.”  

The solar cell module consists of 4 submodules based on 200 x 200 mm2 glass-substrates. Easy scalability for larger and customer-specific systems is been given due to the modular approach. According to every need the modules could be interconnected serial or parallel to offer optimum performance depending on the application.  

The state-of-the-art equipment of the Fraunhofer IPMS offers optimum infrastructure for research and development and to evaluate and develop customer-specific solar cells under production related conditions.      

The development of the technology for processing organic solar cells has been grant-aided by the German Federal Ministry of Education and Research within the OPEG-project (No.: 13N9717).

Fraunhofer IPMS and COMEDD:

In recent years Dresden has evolved into a research center for organic materials and systems. In order to transfer the results to production further improvements in the production process and the establishment as well as the testing of first pilot-production lines are necessary. That is why a Center of Organic Materials and Electronic Devices Dresden (COMEDD) was founded at the Fraunhofer Institute for Photonic Microsystems IPMS. COMEDD combines research and development works for the production, integration and technology of organic devices. The mission of COMEDD is the customer and application specific research, development and pilot production of novel device concepts and production methods for vacuum deposited organic materials. The aim of this center is to be the European-wide leading production-related research and development center for organic semiconductors focusing on organic light-emitting diodes and vacuum technology. The center is supported by the Fraunhofer Gesellschaft, the Free-State of Saxony, the German State as well as by the EU with additional investments of 25 millions Euros for its infrastructure.  

The infrastructure of COMEDD consists of several production lines, which has been implemented in a 900 m² class 10 clean room:              

• Pilot line for the production of OLEDs on 370 x 470 mm² substrates
• Pilot line for the production of organic solar cells on 370 x 470 mm² substrates
• Pilot line for 150 mm and 200 mm wafer for the OLED integration in CMOS substrates
• Roll-to-roll line for flexible substrates.

1. OLED lighting and signage
2. OLED on CMOS integration
3. organic solar cells

Further information are available:

Fraunhofer IPMS
Ines Schedwill                       
Marketing/Public Relations
Maria-Reiche-Str. 2
01109 Dresden/Germany

Tel.: ++49 (0) 351/8823-238
Fax: ++49 (0) 351/8823-266
e-mail: Ines.Schedwill@ipms.fraunhofer.de
Internet: www.ipms.fraunhofer.de