The Karlsruhe Institute of Technology has planned to conduct research on printable organic solar cells. The project is set to last for four years and to improve the efficiency of the solar cells to over 10 per cent. If successful, the solar cells are stated to be cheaper and can be manufactured by screen printing and roll-to-roll process.
The organic solar cells combine multiple solar cells for light absorption as they are stacked on top of each other. Also known as plastic solar cells, this new technology are light, flexible, transparent and are said to be more environmentally friendly that the typical solar cell.
Have a read: http://www.gizmag.com/organic-plastic-solar-cells/23179/