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Here comes the sun

GE’s Danielle Merfeld explains how her team’s work at GE Global Research may one day lead to paper thin solar panels that hang like sails.

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[[GE Genius Series:Dr. Danielle Merfeld, Electrical Engineer][Produced by Vivek Kemp for GE]]

[[Narrator] For Danielle Merfeld light is everything. ]

[It's the answer, in fact, to the planet's energy demands.]

[[D.M.] Looking at light as a form of energy has just been ]

[tremendously exciting.]

[[Narrator] As leader of GE's solar technology programs, ]

[Danielle is charged with helping to develop next-generation solar technologies. ]

[And not those clunky ones you might remember]

[on your neighbor's rooftop. ]

[Danielle's solar panels are thin, flexible, and ]

[of course, they love a good soak in the sun. ]

[Danielle talked to me via phone from her office in ]

[GE's Global Research Center in upstate New York.]

[[D.M.] The biggest thing in people's mind about solar power is exactly what]

[you described, those big, thick panels that go on top of roofs.]

[The biggest revolution, I think, that's happening in the solar]

[field today, there's a technology called thin film semiconductors,]

[thin film PV modules, that is ]

[really revolutionizing the cost side of the equation. ]

[They're lighter, they're cheaper--much cheaper--they use a lot ]

[less material, and they're easier to manufacture. ]

[The biggest next step is going to be when you start putting thin film down ]

[on a flexible substrate that can be wrapped around things]

[or they can conform to a roof or hung like sails. ]

[Not only are they very light, ]

[and hopefully very inexpensive to produce, but they are also]

[more architecturally interesting and you can do a lot]

[more with them than you can a rigid panel of any size. ]

[The one interesting fun fact here is that we get]

[enough energy from the sun in one hour to power]

[all of our electricity needs across the whole globe]

[for an entire year. ]

[[Narrator] One of the things that strikes me about talking to ]

[researchers at the GRC is that so much of tomorrow's technology]

[already seems to exist today, ]

[but the marketplace won't see it for some years to come. ]

[What's the challenge in bringing these technologies to market, and]

[is it ever frustrating to you to know that you ]

[have something in your hands right now that could be benefitting people?]

[[D.M.] No, I think it gives you another challenge. ]

[The reason why it might take 10 years before the common marketplace]

[sees it isn't because we're sitting on it until we need it.]

[It's because the costs aren't there. ]

[Although we can create it in the lab environment, ]

[if you tried to scale it up to gigawatts ]

[of energy, it just wouldn't scale.]

[It would be too costly. ]

[So while it is far off, I think people here get pretty excited knowing that something ]

[that they're working on can make such a big difference in the world. ]

[[Narrator] So much of science seems to be about enabling creativity.]

[What's your philosophy behind accomplishing that goal?]

[[D.M.] Well, I think in terms of a philosophy, ]

[I get very excited when I have a challenge]

[or a problem, and I think everyone does]

[if they feel well-equipped to meet that challenge. ]

[So one of the things that I really try to do is I try to give everyone the sense]

[that there are a lot of tools out there and they only have to learn]

[how to pick them up to use them. ]

[One great example of this is some of the technologies we have around coating. ]

[Some of them are nanostructured, some of them are based on particles. ]

[They do everything from capture light coming in at all angles,]

[so, effectively, it has an anti-reflection coating that]

[is almost as if it is always pointing towards the sun,]

[like a virtual tracker. ]

[We also have some coatings that we're working on that will take the whole spectrum ]

[of sunlight and shift it into the specific portion of the spectrum that ]

[the semiconductor film absorbs. ]

[So it's sort of like revving up the ]

[capability of the solar panel.]

[[Narrator] And Danielle, I have to ask. ]

[Do you consider yourself a genius?]

[[D.M.] I would have to say I'm flattered that somebody would ask me that question, ]

[but I think a better description]

[of what I do and how I do it is that I'm a master juggler,]

[and I can work with a lot of people that have amazing]

[ideas and concepts and help them work with other amazing people]

[who have ways to realize that, and hopefully learn a]

[little along the way and help whenever I can. ]

[[GE, imagination at work]]