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The nanostructure of silicon thin films for solar cells

The nanostructure of silicon thin films for solar cells

This video was recorded at SLONANO conference, Ljubljana 2007. A typical thin-film silicon solar cell is deposited on a glass substrate covered with a conductive transparent metal oxide. The active part of a solar cell consists of three to six silicon layers, each with a thickness of ten to several hundred nanometers, deposited in a layer-by-layer fashion. In these structures layers with different individual optical gaps is stacked together, in order to cover as much of the solar spectrum as possible. By changing the structure of the material, going from pure anorphous to monocrystalline, it is possible to obtain the variation in optical gap using the same material. Silicon in the form of nanocrystals drags in that sense particular attention in last decade. For any practical use, it is... Show More

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