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New solar product captures up to 95 percent of light energy

Date:
May 17, 2011
Source:
University of Missouri-Columbia
Summary:
A chemical engineering researcher is developing a flexible solar sheet that captures more than 90 percent of available light. Today's solar panels only collect 20 percent of available light.

Efficiency is a problem with today's solar panels; they only collect about 20 percent of available light. Now, a University of Missouri engineer has developed a flexible solar sheet that captures more than 90 percent of available light, and he plans to make prototypes available to consumers within the next five years.

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Patrick Pinhero, an associate professor in the MU Chemical Engineering Department, says energy generated using traditional photovoltaic (PV) methods of solar collection is inefficient and neglects much of the available solar electromagnetic (sunlight) spectrum. The device his team has developed -- essentially a thin, moldable sheet of small antennas called nantenna -- can harvest the heat from industrial processes and convert it into usable electricity. Their ambition is to extend this concept to a direct solar facing nantenna device capable of collecting solar irradiation in the near infrared and optical regions of the solar spectrum.

Working with his former team at the Idaho National Laboratory and Garrett Moddel, an electrical engineering professor at the University of Colorado, Pinhero and his team have now developed a way to extract electricity from the collected heat and sunlight using special high-speed electrical circuitry. This team also partners with Dennis Slafer of MicroContinuum, Inc., of Cambridge, Mass., to immediately port laboratory bench-scale technologies into manufacturable devices that can be inexpensively mass-produced.

"Our overall goal is to collect and utilize as much solar energy as is theoretically possible and bring it to the commercial market in an inexpensive package that is accessible to everyone," Pinhero said. "If successful, this product will put us orders of magnitudes ahead of the current solar energy technologies we have available to us today."

As part of a rollout plan, the team is securing funding from the U.S. Department of Energy and private investors. The second phase features an energy-harvesting device for existing industrial infrastructure, including heat-process factories and solar farms.

Within five years, the research team believes they will have a product that complements conventional PV solar panels. Because it's a flexible film, Pinhero believes it could be incorporated into roof shingle products, or be custom-made to power vehicles.

Once the funding is secure, Pinhero envisions several commercial product spin-offs, including infrared (IR) detection. These include improved contraband-identifying products for airports and the military, optical computing, and infrared line-of-sight telecommunications.

A study on the design and manufacturing process was published in the Journal of Solar Energy Engineering.


Story Source:

The above story is based on materials provided by University of Missouri-Columbia. Note: Materials may be edited for content and length.


Journal Reference:

  1. D. K. Kotter, S. D. Novack, W. D. Slafer, P. J. Pinhero. Theory and Manufacturing Processes of Solar Nanoantenna Electromagnetic Collectors. Journal of Solar Energy Engineering, 2010; 132 (1): 011014 DOI: 10.1115/1.4000577

Cite This Page:

University of Missouri-Columbia. "New solar product captures up to 95 percent of light energy." ScienceDaily. ScienceDaily, 17 May 2011. <www.sciencedaily.com/releases/2011/05/110516181339.htm>.
University of Missouri-Columbia. (2011, May 17). New solar product captures up to 95 percent of light energy. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2011/05/110516181339.htm
University of Missouri-Columbia. "New solar product captures up to 95 percent of light energy." ScienceDaily. www.sciencedaily.com/releases/2011/05/110516181339.htm (accessed October 31, 2014).

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