|Cell hits 43.5% as Solar Junction awaits DOE decision|
|15 Apr 2011|
|The start-up sets a world record for solar cell efficiency, but is waiting on a loan guarantee to turn that technology into a commercial reality.|
Solar Junction, a start-up company developing multi-junction cells for concentrated photovoltaics (CPV), has set a new world record for cell efficiency, at 43.5%.
Confirmed by the US National Renewable Energy Laboratory, the figure represents a significant improvement on the previous record of 42.3%, set by Spire Semiconductor last year. Just two months ago, Solar Junction announced that it had reached 41.4%. In terms of production cells available commercially, market leader Spectrolab is currently mass-producing cells with an average efficiency of 39.2%.
Friday, April 15, 2011
Optics.org - Cell efficiency progress
Multijunction concentrator cells (shown in purple, top line) are the most efficient photovoltaic components by far, but also the most expensive to produce. But because of the economics of CPV, a modest improvement in cell efficiency translates to a significant cut in the cost of solar electricity produced this way. Solar Junction's world record improves on Spire's previous best (not shown on this chart) by 1.2%, and maintains the roughly 1%-per-year improvement in multijunction cell performance seen over the past decade. Source: NREL.