Jun 28 2010
Researchers from the University of Minnesota located in Minneapolis and the University of Texas located in Austin have discovered a technique by which solar cell conversion efficiencies of up to 66% can be achieved.
This technique transfers hot electrons to an electron acceptor from quantum dots. Generally, photons in semiconductor solar cells with energies above the bandgap of the semiconductor produce hot electrons, and most of the heat energy from these hot electrons is wasted before it can be harnessed and utilized for electricity.
This new technique utilizes quantum dots to reduce the process of cooling of hot electrons, so as to capture and transfer the heat energy. This facilitates the incorporation of power that is presently lost in traditional solar cells.
Evolution Solar’s President Robert Hines opined that this development is a great step forward in producing cost-effective solar energy.
In collaboration with Texas Southern University, Evolution Solar is constructing a solar demonstration facility which is likely to be situated at the Houston Campus of the University. The project is likely to assist Evolution Solar garner new projects in the energy industry.
Source: http://www.evolutionsolar.com/