Artikelarchiv

Dye-sensitized solar cells (DSSCs) have been actively studied since Grätzel and co-workers achieved a huge efficiency improvement in 1991 [1]. DSSCs have reached the status to be seen as the most promising candidate of the low cost second generation photovoltaic devices. The wonderful feature of DSSC is that it is one of the first examples of truly working molecularly functioning device in which people succeeded in extracting electricity out of each single molecule. Highly efficient charge separation is achieved at the boundary of metal oxide semiconductor and dye molecule, while the separated electron and hole are carried through the inorganic networks, porous oxide electrode and iodide redox electrolyte, respectively. For building such a device, one needs neither expensive vacuum equipments nor high energy, but can self-assemble by chemical adsorption of dye to the inorganic surface, just like dying white cloth.

Bericht über die 23. European Photovoltaic Solar Energy Conference and Exhibition in Valencia

Vom 5. bis 6. November 2008 fand im Internationalen Kongresszentrum Dresden der 4. Internationale Workshop mit Schwerpunkt Faserlaser statt. Motiviert durch das große internationale Interesse an den drei bisherigen Veranstaltungen zu diesem Thema organisierte das Fraunhofer-Institut für Werkstoffund Strahltechnik IWS, Dresden, gemeinsam mit dem Fraunhofer-Institut Angewandte Optik und Feinmechanik IOF, Jena, in bewährter Weise auch den diesjährigen Workshop.