Quantum Dots as Solar Cells

N-type and p-type semiconductor nanocrystals could pave the way for new types of solar cells.

The key to using silicon in electronic devices such as transistors and solar cells lies in doping, or adding in small quantities of other elements, to create an excess of electrons (n-type) or positively charged holes (p-type) that change the material's conductivity. N-type and p-type silicon are butted together to form p-n junctions, the basic building blocks of electronic devices such as solar cells, light-emitting diodes, and transistors.

Source: http://feeds.technologyreview.com/click.phdo?i=75d9d2543bc73dc9097b4b879c6877ac

battlestar geek squad inc geek squad reviews best buy geek squad lawsuit