Eco-Living Magazine

NREL Announces Breakthrough in Solar Cells

Posted on the 26 December 2011 by 2ndgreenrevolution @2ndgreenrev

NREL Announces Breakthrough in Solar CellsAccording to a news release from the National Renewable Energy Lab (NREL) in Golden, Colorado, researchers “have reported the first solar cell that produces a photocurrent that has an external quantum efficiency greater than 100 percent when photoexcited with photons from the high energy region of the solar spectrum.” What this means is that more energy is leaving the cell than is entering it. If this sounds a bit like “creating energy” to you, welcome to the club.

For a more scientific explanation, the “external quantum efficiency for photocurrent, usually expressed as a percentage, is the number of electrons flowing per second in the external circuit of a solar cell divided by the number of photons per second of a specific energy (or wavelength) that enter the solar cell.” What is significant about NREL’s announcement is that no solar cell had achieved 100 percent external quantum efficiency before now. According to the new release, NREL’s maximum efficiency was 114%.

Earlier this month, a paper on the topic was published in Science Magazine. The article explains that the efficiency was made possible by a process called Multiple Exciton Generation (MEG). NREL’s release says that MEG is a process “whereby a single absorbed photon of appropriately high energy can produce more than one electron-hole pair per absorbed photon.”

Kent Moors, of the Oil and Energy Investment Newsletter, argues that in order for “the new wave of MEG applications to make it to market, genuine global collaboration needs to take place.” However, he says, recent suit filed by US producers of photovoltaic cells against Chinese manufacturers has created an err of distrust and hinders collaboration.

Further advancements in solar technology will be integral to making it a viable, competitive energy source.

[Image source]

You Might Also Like :

Back to Featured Articles on Logo Paperblog

These articles might interest you :

  • Regulatory Failure

    Regulatory Failure

    When we think of the issues of health and safety that exist in a modern complex economy, it is impossible to imagine that these social goods will be produced... Read more

    The 23 April 2018 by   Dlittle30
  • Is Bulk Hand-Regging Domains Worth the Time and Money Invested?

    Bulk Hand-Regging Domains Worth Time Money Invested?

    From Ali Zandi to Josh E to Rick Schwartz, it’s alway interesting and entertaining to watch industry vets do their thing — especially when the topic is hand... Read more

    The 23 April 2018 by   Worldwide
  • Video: Spring Flooding in Yosemite National Park

    Video: Spring Flooding Yosemite National Park

    Heavy rains and rapid snow melt off have hit Yosemite National Park hard this spring. The park has had some of its more popular and iconic places closed due to... Read more

    The 23 April 2018 by   Kungfujedi
  • The Verdi Project: Rigoletto

    Verdi Project: Rigoletto

    In which our composer creates a sensation and changes the world of opera, forever. by Paul J. Pelkonen Tito Gobbi (with Renata Scotto) looking suitably... Read more

    The 23 April 2018 by   Superconductor
  • the Ship is Sinking

    Mishpacha Magazine (Hebrew edition) has been running an initiative recently promoting new young couples in the Haredi community take on their own mortgages... Read more

    The 23 April 2018 by   Gldmeier
  • Flower Power: Beyond the Beauty

    If we could see the miracle of a single flower clearly, our whole life would change.” – Lord Buddha. Life is a journey that is full of special moments; like... Read more

    The 23 April 2018 by   Meet Rv
  • Dress To Impress! 5 Dresses For Your First Date

    Dress Impress! Dresses Your First Date

    Are you looking to make a great first impression on a new man when you show up for your first date with him? Are you conflicted as to how to dress, what... Read more

    The 23 April 2018 by   Meet Rv