Tag Archives: Low Cost Solar Cells

Creating low cost solar cells by using Titanium Dioxide

Nearly all solar cells today are  made of silicon, which is costly and difficult to produce. Now, however, a scientist in Switzerland has created solar cells from titanium dioxide molecules that react to photons to create electricity.  Titanium dioxide, while not as efficient as silicon, is inexpensive and is a common manufacturing chemical.

Professor Grätzel, of the Swiss Federal Institute of Technology of Lausanne, had used nano technology to create the cells and then sensitize them with a dye that captures the photons that land on the solar cell.  These cells are now called Grätzel cells, and we expect to be hearing a lot about them in the future.