Material research for thin film solar cells

Today, electric power generation by solar energy conversion using photovoltaic (PV) modules is still more expensive than conventional forms of electricity generation. To achieve a reduction of the cost, PV developments mainly go in the direction of decreasing the cost associated with the active materials and with the production processes. The options intensely studied at the moment are decreasing the thickness of the semiconductor material via thin-film technologies e.g. Cu(In,Ga)Se2 (CIGS) and developing high-throughput processes e.g. via solution-based formulation of cell materials. This enables faster and larger volume production than wafer-based PV manufacturing and limits process cost and material loss as compared to today’s thin film PV vacuum-based production technology.

          A schematic overview of the solar cell

We developed a dedicated setup for in-situ XRD during annealing in a selenium atmosphere, enabling monitoring of phase transformations and grain growth in-situ during a selenization process. For instance, the transformation of a nanoparticle precursor film into a dense solid CIGS film can be investigated during sintering as a function of the annealing and selenization conditions.

© 2012-2015 CoCoon Research Department (works with IE7, firefox 3 or better). Drupal theme by Kiwi Themes.