Faster Assessment of Solar-Cell Quality PDF Print E-mail

National Renewable Energy Laboratory scientists teamed with Tau Science Corporation to develop “Flash Quantum Efficiency System for Solar Cells,” a method that evaluates the quality of solar cells at a speed that is about 1,000 times faster than previous methods.  What used to take 20 minutes can now can be done in a second.

That means every cell on a manufacturing line can be assessed, and each cell can be sorted by its spectral response. Cells that respond best to, say, red light can be connected together to form a solar module. That way, a mismatched blue-response cell on a module won’t put the brakes on all the work the red-response cells are doing.  As a result, photons can be converted more efficiently into electricity at sunrise and sunset when the red wavelengths predominate.

FlashQE™was named among this year’s 100 most significant innovations by R&D Magazine.

 

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MN's Leading Election System

With Secretary of State Steve Simon

 

steve simon

 

Listen to Secretary of State Steve Simon's excellent presentation on MN's outstanding election system emulated by many other states at the Think Again Brooklyns forum January 19, 2016.  Secretary Simon includes ways in which it can be improved, and he explains why it is important to vote.  He concludes with a quote from a tee shirt:  "Failure to vote is not an act of rebellion.  It is an act of surrender."

Get details on how to vote at http://mnvotes.org

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How Oregon Became the Easiest Place to Vote in the US

By Lornet Turnbull
YES! Magazine
October 8, 2016

 


In January, Oregon became the first state in the country to begin automatically registering eligible citizens to vote when they obtain or renew their driver's licenses or state IDs, completely shifting the burden of voter registration from the individual to the government. 

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