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EMCORE Corporation wins Solar Panel Manufacturing Contract From ATK
Space Systems - 27 Jan 2010
EMCORE Corporation, a leading provider human space flight systems capable of “The ATK UltraFlex solar array design will be
of compound semiconductor-based transferring astronauts to and from the providing 14kW of power per shipset with
components, systems and subsystems for International Space Station (ISS), the Moon superior performance characteristics and
the fiber optic and solar power markets, and other destinations within the solar mission enabling features, including ultra-
announced today that the Company has system. NASA expects to order multiple lightweight, high strength, high stiffness,
been awarded a contract by ATK Space Orion Constellation vehicles over the next and compact stowage volume. The
Systems of Goleta, California to decade. EMCORE’s latest generation ZTJ EMCORE solution will enable ATK to
manufacture, test, and deliver solar panels triple-junction solar cells will be designed provide the UltraFlex solar array configured
for ATK’s UltraFlex solar arrays. These solar into the solar panels delivered to ATK for Orion so that it will provide over twenty
arrays will be used to power the Orion Space Systems. With a sunlight-to- times the strength and ten times the
spacecraft being developed by Lockheed electricity conversion efficiency of 30%, the stiffness of our conventional rigid panel
Martin Space Systems Company for NASA. ZTJ solar cell is the highest performance solar arrays, at less than one-third the
The period of performance for this contract space qualified multi-junction solar cell weight.”
for the first two vehicles runs through 2013 available in the industry world today.
and is valued in the range of $9-$11 million. Production of the solar panels will take Christopher Larocca, Chief Operating
The flight solar array system is expendable place at EMCORE’s state-of-the-art Officer of EMCORE, stated, “This CEV
for each Orion mission and continuous manufacturing facilities located in program represents a significant award for
production is expected to run through 2020 Albuquerque, New Mexico. EMCORE. The solar panels for this program
and beyond. will provide the critical power needs
“We are very excited to be using the required for the next phase of NASA’s
The Orion crew exploration vehicle (CEV) EMCORE ZTJ triple junction solar cells in human exploration program. We have
program will serve as NASA’s next the ATK Ultraflex solar array design,” said enjoyed a long-term relationship with ATK
generation human space transportation Dave Messner, Vice President and General Space Systems and look forward to
system. This vehicle is intended to replace Manager of ATK’s Solar Array and partnering with them on this exciting
the current Space Shuttle and will provide Deployables site based in Goleta, California. program.”
Breakthrough for the super material graphene - 26 Jan 2010
The hyper-quick electronics of the future will is currently used to manufacture processors of Technology. The results provide the first
require new materials and the hottest - has reached its limit. In graphene the resistance standard, i.e. a measure of
around is graphene - a single layer of electrons are 100 times quicker than in electronic resistance that is dependent
carbon atoms. Graphene produced using a silicon and research groups throughout the purely on natural constants and which
method developed at Linköping University is world are now attempting to produce the functions at a temperature of 4.2 K. The two
now being used as part of a study at material with sufficiently high quality. resistance standards that have existed up to
Chalmers University of Technology, where it now are based on silicon or gallium
has been shown that graphene maintains Previously it has only been possible to arsenide but only work at very low
the same high quality as silicon, thus paving demonstrate promising features on small temperatures and are considerably more
the way for large-scale production. areas of graphene. In order to progress it difficult to produce and use. The material
must be possible to manufacture the that has now been tested successfully is
These promising results have been material with a larger area in order to make manufactured using a method developed by
published in an online edition of the journal wafers from which circuits can be the Linköping team Rositza Yakimova,
Nature Nanotechnology. The research group constructed. Mikael Syväjärvi and Tihomir Iakimov. “This
at Linköping University of Technology, led by indicates that Swedish research is world
Professor Rositza Yakimova, together with a The focus of the research is now on wafers class when it comes to producing new
research group at Chalmers, led by of silicon carbide, where the silicon is materials that offer sufficiently high
Associate Professor Sergey Kubatkin at the removed from the surface leaving a layer of performance for use in the electronics of the
Department of Microtechnology and carbon atoms. The advantage is that future,” says Mikael Syväjärvi, Associate
Nanoscience, MC2, along with colleagues sufficiently large wafers of silicon carbide Professor at the Department of Physics,
in the United Kingdom and Italy, has are commercially available although ensuring Chemistry and Biology.
demonstrated that Swedish graphene offers that the graphene is evenly shaped and with
a high degree of accuracy for quantum sufficient quality over large areas has proved Article: Quantum resistance standard based
mechanical effects - something that is difficult. “The measurements indicate an on epitaxial graphene by A. Tzalenchuk, S.
otherwise only achieved in well-established improvement of four orders of magnitude or Lara-Avila, A. Kalaboukhov, S. Paolillo, M.
semiconductors such as silicon and gallium 10,000 times greater accuracy than the best Syväjärvi, R. Yakimova, O. Kazakova,
arsenide. results that have been achieved using T.J.B.M. Janssen, V. Falko and S. Kubatkin.
exfoliated graphene,” says Sergey Kubatkin, Nature Nanotechnology Advanced Online
The speed of the electrons in silicon - which Associate Professor at Chalmers University Publication, January 17, 2010.
January/February 2010 www.compoundsemiconductor.net 5
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