|Updated: 11/24/2005; 11:38:33 PM.
Interesting tech developments in nanotech, nanostructured materials, etc.
Tuesday, September 30, 2003
ST tackles alternative solar cells
: "The Franco-Italian semiconductor manufacturer ST Microelectronics (ST)
is developing alternative materials to make cheaper solar cells. ... The ST researchers are following two alternative approaches. The first is based on a so-called Graetzel cell (a device invented by Michael Graetzel of the Swiss Federal Institute of Technology in 1990), which uses a method similar in principle to photosynthesis. In the Graetzel cell, an organic dye absorbs light, while a nanoporous metal oxide layer transports electrons. Holes are transported in the reverse direction by a liquid electrolyte. Coffa says that ST is looking to replace these liquid electrolytes with a conductive polymer. "This could lead to further reductions in the cost per Watt, which is the key to making solar energy commercially viable," he said. The second idea that the ST researchers are working on is to use a mixture of fullerene and a copper-based organic compound sandwiched between the cell's two electrodes." More info on the ST site
. Also, a CNN article
quotes targets of $0.20 per watt. 11:24:08 AM
Copyright 2005 © Ken Novak.
Last update: 11/24/2005; 11:38:33 PM.