| Create a Free Account or Sign In to connect and share in green living and alternative energy forum discussions. |
0
Energy-7: Higher Efficiency With Quantum Dot Solar Cells
Views: 302
Dec 28 2011 11:25 PM | eds in Ed's Articles
Quote
solar.jpgU.S. Department of Energy’s National Renewable Energy Laboratory
. . . Researchers, have reported the first solar cell that produces a
. . . photocurrent that has an external quantum efficiency greater than
. . . 100% when photoexcited with photons from the high energy region
. . . of the solar spectrum.Quote
Note that this does not mean that the entire panel
. . . would have a total efficiency above 100%
. . . (which would be thermodynamically impossible).
The quantum efficiency means only
. . . that the number of electron-hole pairs created in the cell
. . . is greater than the number of photons that are absorbed.
Nonetheless, the advance provided by MEG
. . . could lead to the next generation
. . . of even more efficient solar energy collectors.
. . . would have a total efficiency above 100%
. . . (which would be thermodynamically impossible).
The quantum efficiency means only
. . . that the number of electron-hole pairs created in the cell
. . . is greater than the number of photons that are absorbed.
Nonetheless, the advance provided by MEG
. . . could lead to the next generation
. . . of even more efficient solar energy collectors.
