Prof. Joerg Bagdahn,
Director, Fraunhofer Center for Silicon Photovoltaics, Halle (Saale), Germany,
www.en.csp.fraunhofer.de
Prof. Joerg Bagdahn, Director, Fraunhofer Center for Silicon Photovoltaics, Halle (Saale), Germany
Over the last decade the levelized cost of energy (LCOE) of photovoltaic energy production went down to values below 10 US-Cent per kWh even in less in sunny regions like Germany. Further reduction of the productions cost will enable values below 5 US-Cent per kWh within few years in sunny regions.
In order to achieve those LCOE values a lifetime, n, of the modules of more than 20 years with low degradation rates, d, as well as an maximum energy production, Mel, are required. Based on the equation below it can be seen that both values significantly will influence the LCOE.
IPV: investment cost; At: annual total cost; Rn: removal costs; n: lifetime; Mel: electricity output; dPV: degradation rate; i: discount rate, t: operating year
The presentation will be focused on:
- The development of crystalline silicon solar module for applications in areas with high temperature and high irradiation. A module layout will be presented which allows a higher energy production due to changes of internal electrical connecting of solar cells.
- Reliability studies for crystalline silicon solar modules for harsh environmental conditions (temperature, temperature change, irradiation) like fatigue studies of copper ribbons and potential induced degradation, and
- Experience of development of PV out-door test field in Germany and Morocco.
Biography of Prof. Joerg Bagdahn
Joerg Bagdahn holds a diploma and a Ph. D. in material science from the Technical University of Chemnitz and Martin-Luther-University Halle, respectively. From 2000 until 2002 he worked as a postdoctoral fellow at the Johns Hopkins University (Baltimore) on long term reliability of thin silicon films. In 2003 he joined the Fraunhofer Institute for Mechanics of Materials and worked there as a group leader and later on as head of the department “Microelectronics and Microsystems”.
Since 2007 he is the directors of the Fraunhofer Center for Silicon Photovoltaics CSP, a research center with currently 70 employees. He is currently responsible for research in the areas of silicon wafers, material characterization and module technology and reliability. Since 2009 he also holds a professorship for “Photovoltaic Materials” at the Anhalt University of Applied Sciences. Since 2007 he is the vice president of “Solar Valley Central Germany”.