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Spectrolab Terrestrial Solar Cell Surpasses 40 Percent Efficiency new world record

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Posted by Larry Dighera on December 6, 2006, 4:16 pm

The Boeing Company <http://www.boeing.com/news/releases/index.html>  
Boeing Spectrolab Terrestrial Solar Cell Surpasses 40 Percent

ST. LOUIS, Dec. 06, 2006 -- Boeing [NYSE: BA] today announced that
Spectrolab, Inc., a wholly-owned subsidiary, has achieved a new world
record in terrestrial concentrator solar cell efficiency. Using
concentrated sunlight, Spectrolab demonstrated the ability of a
photovoltaic cell to convert 40.7 percent of the sun's energy into
electricity. The U.S. Department of Energy's National Renewable Energy
Laboratory (NREL) in Golden, Colo., verified the milestone.

"This solar cell performance is the highest efficiency level any
photovoltaic device has ever achieved," said Dr. David Lillington,
president of Spectrolab. "The terrestrial cell we have developed uses
the same technology base as our space-based cells. So, once qualified,
they can be manufactured in very high volumes with minimal impact to
production flow."

High efficiency multijunction cells have a significant advantage over
conventional silicon cells in concentrator systems because fewer solar
cells are required to achieve the same power output. This technology
will continue to dramatically reduce the cost of generating
electricity from solar energy as well as the cost of materials used in
high-power space satellites and terrestrial applications.

"These results are particularly encouraging since they were achieved
using a new class of metamorphic semiconductor materials, allowing
much greater freedom in multijunction cell design for optimal
conversion of the solar spectrum," said Dr. Richard R. King, principal
investigator of the high efficiency solar cell research and
development effort. "The excellent performance of these materials
hints at still higher efficiency in future solar cells."

Spectrolab is reducing the cost of solar cell production through
research investments and is working with several domestic and
international solar concentrator manufacturers on clean, renewable
solar energy solutions. Currently, Spectrolab's terrestrial
concentrator cells are generating power in a 33-kilowatt full-scale
concentrator system in the Australian desert. The company recently
signed multi-million dollar contracts for its high efficiency
concentrator cells and is anticipating several new contracts in the
next few months.

Development of the high-efficiency concentrator cell technology was
funded by the NREL's High Performance Photovoltaics program and

A unit of The Boeing Company, Boeing Integrated Defense Systems
<http://www.boeing.com/ids/index.html>   is one of the world's largest
space and defense businesses. Headquartered in St. Louis, Boeing
Integrated Defense Systems is a $0.8 billion business. It provides
network-centric system solutions to its global military, government,
and commercial customers. It is a leading provider of intelligence,
surveillance and reconnaissance systems; the world's largest military
aircraft manufacturer; the world's largest satellite manufacturer; a
foremost developer of advanced concepts and technologies; a leading
provider of space-based communications; the primary systems integrator
for U.S. missile defense; NASA's largest contractor; and a global
leader in sustainment solutions and launch services.

Posted by H. E. Taylor on December 6, 2006, 10:03 pm

    Normally these measurements are done using a standard light
    level [AM1.5].  Does anybody know precisely what these folks
    have done?  The phrase "Using concentrated sunlight" makes
    me wonder.  Also the description of the cell as a
    "terrestrial concentrator solar cell."


"I find it fascinating that brilliant scientists and philosophers
 have no clue how to deal with the basic irrationality of human life
 and society other than to insist against all reason and evidence
 that things ought to be rational and evidence based." -Scott Atran

Energy News: http://www.autobahn.mb.ca/~het/energy/energynews.html
H.E. Taylor  http://www.autobahn.mb.ca/~het/

Posted by Bill Ward on December 6, 2006, 8:38 pm
 On Wed, 06 Dec 2006 14:03:06 -0800, H. E. Taylor wrote:

William Mook, an intermittent poster in sci.energy and s.e.h, is working
on some novel concentrator designs.  You could Google the archives for
some fairly descriptive posts he wrote a couple of years ago.  


Bill Ward

Posted by anthony.dunk on December 6, 2006, 11:33 pm
 "The U.S. Department of Energy has announced a new solar cell that can
convert more than 40% of sunlight into electricity. The cell, made by
Boeing-Spectrolab, uses mirrors and prisms to boost the sunlight going
into the cell. The DOE says the cells could be sold for $ per watt and
make electricity for 8 to 10 cents per KW/hour."

Full story here:


Posted by Solar Flare on December 7, 2006, 1:04 am
 "could be sold for $ per watt "

So could the current models.

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